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Added a hint to disable windows message processing in SDL_PumpEvents()

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SDL_SetHint( SDL_HINT_WINDOWS_ENABLE_MESSAGELOOP, "0" );
This commit is contained in:
Sam Lantinga
2014-06-04 10:52:34 -07:00
parent 0d1f0fed71
commit 3e3b34adc9
4 changed files with 40 additions and 15 deletions
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11
include/SDL_hints.h
View File

@@ -196,6 +196,17 @@ extern "C" {
*/
#define SDL_HINT_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN "SDL_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN"
/**
* \brief A variable controlling whether the windows message loop is processed by SDL
*
* This variable can be set to the following values:
* "0" - The window message loop is not run
* "1" - The window message loop is processed in SDL_PumpEvents()
*
* By default SDL will process the windows message loop
*/
#define SDL_HINT_WINDOWS_ENABLE_MESSAGELOOP "SDL_WINDOWS_ENABLE_MESSAGELOOP"
/**
* \brief A variable controlling whether grabbing input grabs the keyboard
*

2
src/video/windows/SDL_windowsevents.c
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@@ -890,6 +890,7 @@ WIN_PumpEvents(_THIS)
MSG msg;
DWORD start_ticks = GetTickCount();
if (g_WindowsEnableMessageLoop) {
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
/* Always translate the message in case it's a non-SDL window (e.g. with Qt integration) */
TranslateMessage(&msg);
@@ -900,6 +901,7 @@ WIN_PumpEvents(_THIS)
break;
}
}
}
/* Windows loses a shift KEYUP event when you have both pressed at once and let go of one.
You won't get a KEYUP until both are released, and that keyup will only be for the second

11
src/video/windows/SDL_windowsvideo.c
View File

@@ -39,8 +39,18 @@ static int WIN_VideoInit(_THIS);
static void WIN_VideoQuit(_THIS);
/* Hints */
SDL_bool g_WindowsEnableMessageLoop = SDL_TRUE;
SDL_bool g_WindowFrameUsableWhileCursorHidden = SDL_TRUE;
static void UpdateWindowsEnableMessageLoop(void *userdata, const char *name, const char *oldValue, const char *newValue)
{
if (newValue && *newValue == '0') {
g_WindowsEnableMessageLoop = SDL_FALSE;
} else {
g_WindowsEnableMessageLoop = SDL_TRUE;
}
}
static void UpdateWindowFrameUsableWhileCursorHidden(void *userdata, const char *name, const char *oldValue, const char *newValue)
{
if (newValue && *newValue == '0') {
@@ -178,6 +188,7 @@ WIN_VideoInit(_THIS)
WIN_InitKeyboard(_this);
WIN_InitMouse(_this);
SDL_AddHintCallback(SDL_HINT_WINDOWS_ENABLE_MESSAGELOOP, UpdateWindowsEnableMessageLoop, NULL);
SDL_AddHintCallback(SDL_HINT_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN, UpdateWindowFrameUsableWhileCursorHidden, NULL);
return 0;

1
src/video/windows/SDL_windowsvideo.h
View File

@@ -171,6 +171,7 @@ typedef struct SDL_VideoData
TSFSink *ime_ippasink;
} SDL_VideoData;
extern SDL_bool g_WindowsEnableMessageLoop;
extern SDL_bool g_WindowFrameUsableWhileCursorHidden;
typedef struct IDirect3D9 IDirect3D9;