🚀 go-pugleaf

In article <1993Jan07.200849.9892@eng.umd.edu> equine@eng.umd.edu (Melinda L. Gierisch) writes:
>
>I am looking for sample code that allows the user to grab a portion of
>the screen (not window) and copy it to the clipboard or possibly
>another application.  I know that there are commercial software
>packages that contain this functionality, but we would then need to 
>worry about licensing agreements, etc. when distributing our application. 
>
>If anyone knows the proper commands/functions to use, has written such
>a function, or knows of a reference book that contains this
>information, please let me know.

	It's really quite simple.  Assuming you have an HBITMAP,
	you just do:
		OpenClipboard(hwnd);
		EmptyClipboard();
		SetClipboardData(CF_BITMAP,hbitmap);
		CloseClipboard();

	Remember that Windows can copy the whole screen or current
	window to the clipboard with the PrintScreen and Alt-PrintScreen
	keys.  If you want a portion of the screen, find some way to
	select the region (click, drag etc with the mouse) and then
	copy it to a bitmap:
		hdc=GetDC(hwnd);
		hdccompatible=CreateCompatibleDC(hdc);
		hbitmap=CreateCompatibleBitmap(hdc,x,y);
		BitBlt(...)
	I forget the rest, but you get the idea.  Also do *not*
	trust the above pseudo-code - look up the functions
	yourself.
-- 
John A. Grant						jagrant@emr1.emr.ca
Airborne Geophysics
Geological Survey of Canada, Ottawa