(svn r1497) -Fix: [1101179] Crash if generating land while industry window is open. This also happened for towns and the land information window
-Added DeleteWindowByClass() function that deletes all windows of a given class
#ifndef SCREENSHOT_H
#define SCREENSHOT_H
void InitializeScreenshotFormats(void);
const char *GetScreenshotFormatDesc(int i);
void SetScreenshotFormat(int i);
bool MakeScreenshot(void);
bool MakeWorldScreenshot(int left, int top, int width, int height, int zoom);
#endif