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Fixed bug 1593 - SDL_DROPFILE event doesn't work on Windows

Philipp Wiesemann 2012-09-30 05:56:09 PDT

I attached a patch which tries to implement the dropfile support for Microsoft
Windows. If applied SDL_DROPFILE events should be sent for single or multiple
files which are dropped on window.

The handling on Windows side is always activated (cursor will change and so on)
because there is no connection between SDL_EventState() and the window setup. I
assumed this additional overhead would be small and can be ignored.
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slouken committed Sep 30, 2012
1 parent 0df86b8 commit 67aa757077f0e10bea814c2a466de5df9db07b36
Showing with 33 additions and 1 deletion.
  1. +27 −1 src/video/windows/SDL_windowsevents.c
  2. +6 −0 src/video/windows/SDL_windowswindow.c
@@ -29,6 +29,10 @@
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_touch_c.h"

/* Dropfile support */
#include <shellapi.h>




/*#define WMMSG_DEBUG*/
@@ -619,7 +623,29 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
return 0;
}
break;
}

case WM_DROPFILES:
{
UINT i;
HDROP drop = (HDROP) wParam;
UINT count = DragQueryFile(drop, 0xFFFFFFFF, NULL, 0);
for (i = 0; i < count; ++i) {
UINT size = DragQueryFile(drop, i, NULL, 0) + 1;
LPTSTR buffer = SDL_stack_alloc(TCHAR, size);
if (buffer) {
if (DragQueryFile(drop, i, buffer, size)) {
char *file = WIN_StringToUTF8(buffer);
SDL_SendDropFile(file);
SDL_free(file);
}
SDL_stack_free(buffer);
}
}
DragFinish(drop);
return 0;
}
break;
}

/* If there's a window proc, assume it's going to handle messages */
if (data->wndproc) {
@@ -29,6 +29,9 @@
#include "SDL_windowsvideo.h"
#include "SDL_windowswindow.h"

/* Dropfile support */
#include <shellapi.h>

/* This is included after SDL_windowsvideo.h, which includes windows.h */
#include "SDL_syswm.h"

@@ -185,6 +188,9 @@ SetupWindowData(_THIS, SDL_Window * window, HWND hwnd, SDL_bool created)
videodata->RegisterTouchWindow(hwnd, (TWF_FINETOUCH|TWF_WANTPALM));
}

/* Enable dropping files */
DragAcceptFiles(hwnd, TRUE);

/* All done! */
return 0;
}

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