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#ifndef WINDOW_H

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#define WINDOW_H

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#include "vehicle_gui.h"

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typedef union WindowEvent WindowEvent;

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//typedef void WindowProc(Window *w, int event, int wparam, long lparam);

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typedef void WindowProc(Window *w, WindowEvent *e);

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typedef struct Widget {

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	byte type;

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	byte color;

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	uint16 left, right, top, bottom;

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	uint16 unkA;

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	uint16 tooltips;

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} Widget;

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union WindowEvent {

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	byte event;

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	struct {

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		byte event;

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		Point pt;

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		int widget;

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	} click;

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	struct {

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		byte event;

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		Point pt;

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		uint tile;

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		uint starttile;

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		int userdata;

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	} place;

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	struct {

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		byte event;

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		Point pt;

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		int widget;

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	} dragdrop;

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	struct {

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		byte event;

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		byte *str;

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	} edittext;

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	struct {

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		byte event;

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		Point pt;

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	} popupmenu;

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	struct {

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		byte event;

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		int button;

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		int index;

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	} dropdown;

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	struct {

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		byte event;

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		Point pt;

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		int widget;

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	} mouseover;

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	struct {

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		byte event;

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		bool cont;   // continue the search? (default true)

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		byte ascii;  // 8-bit ASCII-value of the key

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		uint16 keycode;// untranslated key (including shift-state)

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	} keypress;

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};

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enum WindowKeyCodes {

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	WKC_SHIFT = 0x8000,

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	WKC_CTRL  = 0x4000,

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	WKC_ALT   = 0x2000,

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	WKC_META  = 0x1000,

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	// Special ones

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	WKC_NONE = 0,

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	WKC_ESC=1,

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	WKC_BACKSPACE = 2,

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	WKC_INSERT = 3,

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	WKC_DELETE = 4,

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	WKC_PAGEUP = 5,

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	WKC_PAGEDOWN = 6,

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	WKC_END = 7,

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	WKC_HOME = 8,

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	// Arrow keys

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	WKC_LEFT = 9,

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	WKC_UP = 10,

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	WKC_RIGHT = 11,

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	WKC_DOWN = 12,

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	// Return & tab

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	WKC_RETURN = 13,

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	WKC_TAB = 14,

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	// Numerical keyboard

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	WKC_NUM_0 = 16,

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	WKC_NUM_1 = 17,

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	WKC_NUM_2 = 18,

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	WKC_NUM_3 = 19,

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	WKC_NUM_4 = 20,

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	WKC_NUM_5 = 21,

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	WKC_NUM_6 = 22,

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	WKC_NUM_7 = 23,

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	WKC_NUM_8 = 24,

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	WKC_NUM_9 = 25,

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	WKC_NUM_DIV = 26,

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	WKC_NUM_MUL = 27,

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	WKC_NUM_MINUS = 28,

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	WKC_NUM_PLUS = 29,

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	WKC_NUM_ENTER = 30,

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	WKC_NUM_DECIMAL = 31,

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	// Space

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	WKC_SPACE = 32,

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	// Function keys

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	WKC_F1 = 33,

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	WKC_F2 = 34,

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	WKC_F3 = 35,

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	WKC_F4 = 36,

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	WKC_F5 = 37,

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	WKC_F6 = 38,

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	WKC_F7 = 39,

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	WKC_F8 = 40,

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	WKC_F9 = 41,

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	WKC_F10 = 42,

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	WKC_F11 = 43,

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	WKC_F12 = 44,

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	// backquote is the key left of "1"

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	// we only store this key here, no matter what character is really mapped to it

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	// on a particular keyboard. (US keyboard: ` and ~ ; German keyboard: ^ and °)

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	WKC_BACKQUOTE = 45,

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	WKC_PAUSE     = 46,

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	// 0-9 are mapped to 48-57

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	// A-Z are mapped to 65-90

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	// a-z are mapped to 97-122

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	//WKC_UNKNOWN = 0xFF,

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};

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typedef struct WindowDesc {

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	int16 left, top, width, height;

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	byte cls;

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	byte parent_cls;

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	uint32 flags;

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	const Widget *widgets;

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	WindowProc *proc;

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} WindowDesc;

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enum {

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	WDF_STD_TOOLTIPS = 1,		/* use standard routine when displaying tooltips */

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	WDF_DEF_WIDGET = 2,			/* default widget control for some widgets in the on click event */

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	WDF_STD_BTN = 4,				/* default handling for close and drag widgets (widget no 0 and 1) */

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	WDF_RESTORE_DPARAM = 8, /* when drawing widgets, restore the dparam so all widgets recieve the same set of them */

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	WDF_UNCLICK_BUTTONS=16, /* Unclick buttons when the window event times out */

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};

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/* can be used as x or y coordinates to cause a specific placement */

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enum {

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	WDP_AUTO = -1,

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	WDP_CENTER = -2,

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};

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typedef struct {

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	StringID caption;

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	bool caret;

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	WindowClass wnd_class;

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	WindowNumber wnd_num;

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	uint16 maxlen, maxwidth;

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	byte *buf;

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} querystr_d;

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#define WP(ptr,str) (*(str*)(ptr)->custom)

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// querystr_d is the bigest struct that comes in w->custom

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//  because 64-bit systems use 64-bit pointers, it is bigger on a 64-bit system

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//  then on a 32-bit system. Therefor the size is calculated from querystr_d

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//  instead of a hardcoded number.

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// if any struct becomes bigger the querystr_d, it should be replaced.

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#define WINDOW_CUSTOM_SIZE sizeof(querystr_d)

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typedef struct {

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	uint16 count, cap, pos;

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} Scrollbar;

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struct Window {

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	uint16 flags4;

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	WindowClass window_class;

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	WindowNumber window_number;

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	int left,top;

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	int width,height;

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	Scrollbar hscroll, vscroll;

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	byte caption_color;

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	uint32 click_state, disabled_state, hidden_state;

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	WindowProc *wndproc;

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	ViewPort *viewport;

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	const Widget *widget;

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	//const WindowDesc *desc;

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	uint32 desc_flags;

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	byte custom[WINDOW_CUSTOM_SIZE];

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};

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typedef struct {

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	byte item_count; /* follow_vehicle */

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	byte sel_index;		/* scrollpos_x */

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	byte main_button; /* scrollpos_y */

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	byte action_id;

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	StringID string_id; /* unk30 */

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	uint16 checked_items; /* unk32 */

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} menu_d;

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typedef struct {

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	int16 data_1, data_2, data_3;

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	int16 data_4, data_5;

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	bool close; /* scrollpos_y */

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	byte byte_1;

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} def_d;

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typedef struct {

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	void *data;

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} void_d;

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typedef struct {

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	uint16 base; /* follow_vehicle */

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	uint16 count;/* scrollpos_x */

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} tree_d;

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typedef struct {

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	byte refresh_counter; /* follow_vehicle */

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} plstations_d;

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typedef struct {

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	StringID string_id;

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} tooltips_d;

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typedef struct {

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	byte railtype;

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	byte sel_index;

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	int16 sel_engine;

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	int16 rename_engine;

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} buildtrain_d;

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typedef struct {

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	VehicleID sel;

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} traindepot_d;

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typedef struct {

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	int sel;

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} order_d;

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typedef struct {

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	byte tab;

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} traindetails_d;

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typedef struct {

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	int16 scroll_x, scroll_y, subscroll;

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} smallmap_d;

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typedef struct {

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	uint32 face;

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	byte gender;

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} facesel_d;

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typedef struct {

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	int sel;

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	byte cargo;

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} refit_d;

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typedef struct {

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	uint16 follow_vehicle;

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	int16 scrollpos_x, scrollpos_y;

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} vp_d;

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typedef struct {

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	uint16 follow_vehicle;

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	int16 scrollpos_x, scrollpos_y;

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	NewsItem *ni;

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} news_d;

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typedef enum VehicleListFlags {

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	VL_DESC    = 0x01,

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	VL_RESORT  = 0x02,

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	VL_REBUILD = 0x04

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} VehicleListFlags;

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typedef struct vehiclelist_d {

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	SortStruct *sort_list;

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	uint16 list_length;

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	byte sort_type;

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	VehicleListFlags flags;

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	uint16 resort_timer;

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} vehiclelist_d;

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assert_compile(sizeof(vehiclelist_d) <= WINDOW_CUSTOM_SIZE);

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enum WindowEvents {

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	WE_CLICK = 0,

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	WE_PAINT = 1,

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	WE_MOUSELOOP = 2,

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	WE_TICK = 3,

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	WE_4 = 4,

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	WE_TIMEOUT = 5,

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	WE_PLACE_OBJ = 6,

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	WE_ABORT_PLACE_OBJ = 7,

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	WE_DESTROY = 8,

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	WE_ON_EDIT_TEXT = 9,

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	WE_POPUPMENU_SELECT = 10,

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	WE_POPUPMENU_OVER = 11,

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	WE_DRAGDROP = 12,

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	WE_PLACE_DRAG = 13,

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	WE_PLACE_MOUSEUP = 14,

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	WE_PLACE_PRESIZE = 15,

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	WE_DROPDOWN_SELECT = 16,

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	WE_RCLICK = 17,

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	WE_KEYPRESS = 18,

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	WE_CREATE = 19,

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	WE_MOUSEOVER = 20,

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	WE_ON_EDIT_TEXT_CANCEL = 21,

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};

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/****************** THESE ARE NOT WIDGET TYPES!!!!! *******************/

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enum WindowWidgetBehaviours {

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	WWB_PUSHBUTTON = 1 << 5,

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	WWB_NODISBUTTON = 2 << 5,

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};

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enum WindowWidgetTypes {

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	WWT_EMPTY = 0,

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	WWT_IMGBTN = 1,						/* button with image */

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	WWT_PANEL = WWT_IMGBTN,

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	WWT_PANEL_2 = 2,					/* button with diff image when clicked */

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	WWT_TEXTBTN = 3,					/* button with text */

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	WWT_CLOSEBOX = WWT_TEXTBTN,

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	WWT_4 = 4,								/* button with diff text when clicked */

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	WWT_5 = 5,								/* label */

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	WWT_6 = 6,								/* combo box text area */

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	WWT_MATRIX = 7,

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	WWT_SCROLLBAR = 8,

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	WWT_FRAME = 9,						/* frame */

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	WWT_CAPTION = 10,

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	WWT_HSCROLLBAR = 11,

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	WWT_LAST = 12,						/* Last Item. use WIDGETS_END to fill up padding!! */

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	WWT_MASK = 31,

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	WWT_PUSHTXTBTN	= WWT_TEXTBTN	| WWB_PUSHBUTTON,

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	WWT_PUSHIMGBTN	= WWT_IMGBTN	| WWB_PUSHBUTTON,

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	WWT_NODISTXTBTN = WWT_TEXTBTN	| WWB_NODISBUTTON,

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};

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#define WIDGETS_END WWT_LAST,     0,     0,     0,     0,     0, 0, STR_NULL

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enum WindowFlags {

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	WF_TIMEOUT_SHL = 0,

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	WF_TIMEOUT_MASK = 7,

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	WF_DRAGGING = 1 << 3,

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	WF_SCROLL_UP = 1 << 4,

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	WF_SCROLL_DOWN = 1 << 5,

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	WF_SCROLL_MIDDLE = 1 << 6,

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	WF_HSCROLL = 1 << 7,

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	WF_SIZING = 1 << 8,

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	WF_DISABLE_VP_SCROLL = 1 << 10,

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	WF_WHITE_BORDER_ONE = 1 << 11,

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	WF_WHITE_BORDER_MASK = 3 << 11,

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};

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void DispatchLeftClickEvent(Window *w, int x, int y);

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void DispatchRightClickEvent(Window *w, int x, int y);

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void DispatchMouseWheelEvent(Window *w, int wheel);

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/* window.c */

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void DrawOverlappedWindow(Window *w, int left, int top, int right, int bottom);

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void CallWindowEventNP(Window *w, int event);

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void CallWindowTickEvent();

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void DrawDirtyBlocks();

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void SetDirtyBlocks(int left, int top, int right, int bottom);

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void SetWindowDirty(Window *w);

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Window *FindWindowById(WindowClass cls, WindowNumber number);

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void DeleteWindow(Window *w);

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Window *BringWindowToFrontById(WindowClass cls, WindowNumber number);

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Window *BringWindowToFront(Window *w);

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Window *StartWindowDrag(Window *w);

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Window *StartWindowSizing(Window *w);

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Window *FindWindowFromPt(int x, int y);

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Window *AllocateWindow(

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							int x,

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							int y,

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							int width,

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							int height,

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							WindowProc *proc,

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							WindowClass cls,

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							const Widget *widget);

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Window *AllocateWindowDesc(const WindowDesc *desc);

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Window *AllocateWindowDescFront(const WindowDesc *desc, int value);

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Window *AllocateWindowAutoPlace(

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	int width,

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	int height,

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	WindowProc *proc,

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	WindowClass cls,

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	const Widget *widget);

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Window *AllocateWindowAutoPlace2(

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	WindowClass exist_class,

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	WindowNumber exist_num,

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	int width,

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	int height,

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	WindowProc *proc,

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	WindowClass cls,

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	const Widget *widget);

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void DrawWindowViewport(Window *w);

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void InitWindowSystem();

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int GetMenuItemIndex(Window *w, int x, int y);

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void MouseLoop();

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void UpdateWindows();

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void InvalidateWidget(Window *w, byte widget_index);

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void GuiShowTooltips(uint16 string_id);

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void UnclickWindowButtons(Window *w);

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void UnclickSomeWindowButtons(Window *w, uint32 mask);

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void RelocateAllWindows(int neww, int newh);

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int PositionMainToolbar(Window *w);

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/* widget.c */

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int GetWidgetFromPos(Window *w, int x, int y);

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void DrawWindowWidgets(Window *w);

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void ShowDropDownMenu(Window *w, const StringID *strings, int selected, int button, uint32 disabled_mask);

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   455

void HandleButtonClick(Window *w, byte widget);

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Window *GetCallbackWnd();

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void DeleteNonVitalWindows();

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/* window.c */

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VARDEF Window _windows[20];

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VARDEF Window *_last_window;

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   464

VARDEF Point _cursorpos_drag_start;

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VARDEF bool _left_button_down;

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VARDEF bool _left_button_clicked;

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VARDEF bool _right_button_down;

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VARDEF bool _right_button_clicked;

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   472

VARDEF int _alloc_wnd_parent_num;

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   474

VARDEF int _scrollbar_start_pos;

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VARDEF int _scrollbar_size;

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VARDEF bool _demo_mode;

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VARDEF byte _scroller_click_timeout;

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   479

VARDEF bool _dragging_window;

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VARDEF bool _scrolling_scrollbar;

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VARDEF bool _scrolling_viewport;

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VARDEF bool _popup_menu_active;

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//VARDEF bool _dragdrop_active;

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   485

VARDEF Point _fix_mouse_at;

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   487

VARDEF byte _special_mouse_mode;

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enum SpecialMouseMode {

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	WSM_NONE = 0,

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	WSM_DRAGDROP = 1,

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	WSM_SIZING = 2,

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	WSM_PRESIZE = 3,

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};

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void ScrollbarClickHandler(Window *w, const Widget *wi, int x, int y);

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#endif /* WINDOW_H */