[AD] drag and drop win32

[aj <aj@xxxxxxxxxx>]

i spotted this in the CHANGES for 4.1.12

Angelo Mottola let application bundles accept files dragged onto the
application icon under MacOS X.


i have presented an idea for win32 drag and drop before, maybe with hackish 
code.
this time i'd like to present it again; much cleaner code, and ask that it 
be included in the win32 port.





// user provides a callback func
void *drag_and_drop_callback(LONG x, LONG y, const char* sz);




// some code for /src/win/wwnd.c

void win32_process_drag_and_drop(WPARAM w)
{
	HANDLE hDrop;
	POINT point;	// simple struct { LONG x, LONG y }
	UINT file_count;
	UINT i;
	char sz[512];

	hDrop = (void*)(w);  // the handle to the query is passed in via wParam
	
	if ( 0 == DragQueryPoint(hDrop, &point))  // win32 call, query the mouse 
drop point
		return;

	file_count = DragQueryFile(hDrop, 0xFFFFFFFF, NULL, 0 );  // win32 call, 
query the number of files to be processed
	if ( file_count > 0 )
	{
		for ( i=0 ; i < file_count ; i++ )
		{
			DragQueryFile(hDrop, i, sz, 512 );  // win32 call, obtain the filename
			drag_and_drop_callback(point.x, point.y, sz);	
		}
	}
	DragFinish(hDrop);
}





// add this to the msgs
case WM_DROPFILES :
	win32_process_drag_and_drop( wParam );
	break;



1st argument of  CreateWindowEx()  in /src/win/wwnd.c
add this   WS_EX_ACCEPTFILES



that it!
anyone see any reason why this could not be added ?

aj.