Commit 3b050fc953ec6e1c025b77f34bd9991114846bd9
2013-11-06T23:35:08
Horizontal wheel support in windows Lorenzo Pistone this patch adds support for the horizontal wheel in Windows. It is shamelessly copied off the vertical wheel code, but I guess that that is a value added in consistency.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
diff --git a/src/video/windows/SDL_windowsevents.c b/src/video/windows/SDL_windowsevents.c
index 1826258..0c9fcb9 100644
--- a/src/video/windows/SDL_windowsevents.c
+++ b/src/video/windows/SDL_windowsevents.c
@@ -67,6 +67,9 @@
#ifndef WM_TOUCH
#define WM_TOUCH 0x0240
#endif
+#ifndef WM_MOUSEHWHEEL
+#define WM_MOUSEHWHEEL 0x020E
+#endif
static SDL_Scancode
WindowsScanCodeToSDLScanCode( LPARAM lParam, WPARAM wParam )
@@ -481,6 +484,25 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
break;
}
+ case WM_MOUSEHWHEEL:
+ {
+ static short s_AccumulatedMotion;
+
+ s_AccumulatedMotion += GET_WHEEL_DELTA_WPARAM(wParam);
+ if (s_AccumulatedMotion > 0) {
+ while (s_AccumulatedMotion >= WHEEL_DELTA) {
+ SDL_SendMouseWheel(data->window, 0, 1, 0, timestamp);
+ s_AccumulatedMotion -= WHEEL_DELTA;
+ }
+ } else {
+ while (s_AccumulatedMotion <= -WHEEL_DELTA) {
+ SDL_SendMouseWheel(data->window, 0, -1, 0, timestamp);
+ s_AccumulatedMotion += WHEEL_DELTA;
+ }
+ }
+ break;
+ }
+
#ifdef WM_MOUSELEAVE
case WM_MOUSELEAVE:
if (SDL_GetMouseFocus() == data->window && !SDL_GetMouse()->relative_mode) {