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SDL_sysevents.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_windows.h"
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#include "SDL_events.h"
#include "SDL_video.h"
#include "SDL_error.h"
#include "SDL_syswm.h"
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#include "SDL_stdlib.h"
#include "SDL_string.h"
#include "SDL_getenv.h"
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#include "SDL_sysevents.h"
#include "SDL_events_c.h"
#include "SDL_sysvideo.h"
#include "SDL_lowvideo.h"
#include "SDL_syswm_c.h"
#include "SDL_main.h"
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#include "SDL_loadso.h"
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#ifdef WMMSG_DEBUG
#include "wmmsg.h"
#endif
#ifdef _WIN32_WCE
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#include "SDL_gapivideo.h"
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#define NO_GETKEYBOARDSTATE
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#define NO_CHANGEDISPLAYSETTINGS
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#endif
/* The window we use for everything... */
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#ifdef _WIN32_WCE
LPWSTR SDL_Appname = NULL;
#else
LPSTR SDL_Appname = NULL;
#endif
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Uint32 SDL_Appstyle = 0;
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HINSTANCE SDL_Instance = NULL;
HWND SDL_Window = NULL;
RECT SDL_bounds = {0, 0, 0, 0};
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int SDL_windowX = 0;
int SDL_windowY = 0;
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int SDL_resizing = 0;
int mouse_relative = 0;
int posted = 0;
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#ifndef NO_CHANGEDISPLAYSETTINGS
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DEVMODE SDL_desktop_mode;
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DEVMODE SDL_fullscreen_mode;
#endif
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WORD *gamma_saved = NULL;
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/* Functions called by the message processing function */
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LONG (*HandleMessage)(_THIS, HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)=NULL;
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void (*WIN_RealizePalette)(_THIS);
void (*WIN_PaletteChanged)(_THIS, HWND window);
void (*WIN_WinPAINT)(_THIS, HDC hdc);
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extern void DIB_SwapGamma(_THIS);
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#ifndef NO_GETKEYBOARDSTATE
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/* Variables and support functions for SDL_ToUnicode() */
static int codepage;
static int Is9xME();
static int GetCodePage();
static int WINAPI ToUnicode9xME(UINT vkey, UINT scancode, BYTE *keystate, Uint16 *wchars, int wsize, UINT flags);
ToUnicodeFN SDL_ToUnicode = ToUnicode9xME;
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#endif /* !NO_GETKEYBOARDSTATE */
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#if defined(_WIN32_WCE)
// dynamically load aygshell dll because we want SDL to work on HPC and be300
HINSTANCE aygshell = NULL;
BOOL (WINAPI *SHFullScreen)(HWND hwndRequester, DWORD dwState) = 0;
#define SHFS_SHOWTASKBAR 0x0001
#define SHFS_HIDETASKBAR 0x0002
#define SHFS_SHOWSIPBUTTON 0x0004
#define SHFS_HIDESIPBUTTON 0x0008
#define SHFS_SHOWSTARTICON 0x0010
#define SHFS_HIDESTARTICON 0x0020
static void LoadAygshell(void)
{
if( !aygshell )
aygshell = SDL_LoadObject("aygshell.dll");
if( aygshell )
{
SHFullScreen = (int (WINAPI *)(struct HWND__ *,unsigned long)) SDL_LoadFunction(aygshell, "SHFullScreen");
}
}
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/* for gapi landscape mode */
static void GapiTransform(SDL_ScreenOrientation rotate, char hires, Sint16 *x, Sint16 *y) {
Sint16 rotatedX;
Sint16 rotatedY;
if (hires) {
*x = *x * 2;
*y = *y * 2;
}
switch(rotate) {
case SDL_ORIENTATION_UP:
break;
case SDL_ORIENTATION_RIGHT:
if (!SDL_VideoSurface)
break;
rotatedX = SDL_VideoSurface->w - *y;
rotatedY = *x;
*x = rotatedX;
*y = rotatedY;
break;
case SDL_ORIENTATION_LEFT:
if (!SDL_VideoSurface)
break;
rotatedX = *y;
rotatedY = SDL_VideoSurface->h - *x;
*x = rotatedX;
*y = rotatedY;
break;
}
}
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#endif
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static void SDL_RestoreGameMode(void)
{
#ifndef NO_CHANGEDISPLAYSETTINGS
ShowWindow(SDL_Window, SW_RESTORE);
ChangeDisplaySettings(&SDL_fullscreen_mode, CDS_FULLSCREEN);
#endif
}
static void SDL_RestoreDesktopMode(void)
{
#ifndef NO_CHANGEDISPLAYSETTINGS
ShowWindow(SDL_Window, SW_MINIMIZE);
ChangeDisplaySettings(NULL, 0);
#endif
}
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#ifdef WM_MOUSELEAVE
/*
Special code to handle mouse leave events - this sucks...
http://support.microsoft.com/support/kb/articles/q183/1/07.asp
TrackMouseEvent() is only available on Win98 and WinNT.
_TrackMouseEvent() is available on Win95, but isn't yet in the mingw32
development environment, and only works on systems that have had IE 3.0
or newer installed on them (which is not the case with the base Win95).
Therefore, we implement our own version of _TrackMouseEvent() which
uses our own implementation if TrackMouseEvent() is not available.
*/
static BOOL (WINAPI *_TrackMouseEvent)(TRACKMOUSEEVENT *ptme) = NULL;
static VOID CALLBACK
TrackMouseTimerProc(HWND hWnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
RECT rect;
POINT pt;
GetClientRect(hWnd, &rect);
MapWindowPoints(hWnd, NULL, (LPPOINT)&rect, 2);
GetCursorPos(&pt);
if ( !PtInRect(&rect, pt) || (WindowFromPoint(pt) != hWnd) ) {
if ( !KillTimer(hWnd, idEvent) ) {
/* Error killing the timer! */
}
PostMessage(hWnd, WM_MOUSELEAVE, 0, 0);
}
}
static BOOL WINAPI WIN_TrackMouseEvent(TRACKMOUSEEVENT *ptme)
{
if ( ptme->dwFlags == TME_LEAVE ) {
return SetTimer(ptme->hwndTrack, ptme->dwFlags, 100,
(TIMERPROC)TrackMouseTimerProc);
}
return FALSE;
}
#endif /* WM_MOUSELEAVE */
/* Function to retrieve the current keyboard modifiers */
static void WIN_GetKeyboardState(void)
{
#ifndef NO_GETKEYBOARDSTATE
SDLMod state;
BYTE keyboard[256];
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Uint8 *kstate = SDL_GetKeyState(NULL);
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state = KMOD_NONE;
if ( GetKeyboardState(keyboard) ) {
if ( keyboard[VK_LSHIFT] & 0x80) {
state |= KMOD_LSHIFT;
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kstate[SDLK_LSHIFT] = SDL_PRESSED;
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}
if ( keyboard[VK_RSHIFT] & 0x80) {
state |= KMOD_RSHIFT;
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kstate[SDLK_RSHIFT] = SDL_PRESSED;
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}
if ( keyboard[VK_LCONTROL] & 0x80) {
state |= KMOD_LCTRL;
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kstate[SDLK_LCTRL] = SDL_PRESSED;
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}
if ( keyboard[VK_RCONTROL] & 0x80) {
state |= KMOD_RCTRL;
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kstate[SDLK_RCTRL] = SDL_PRESSED;
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}
if ( keyboard[VK_LMENU] & 0x80) {
state |= KMOD_LALT;
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kstate[SDLK_LALT] = SDL_PRESSED;
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}
if ( keyboard[VK_RMENU] & 0x80) {
state |= KMOD_RALT;
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kstate[SDLK_RALT] = SDL_PRESSED;
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}
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if ( keyboard[VK_NUMLOCK] & 0x01) {
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state |= KMOD_NUM;
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kstate[SDLK_NUMLOCK] = SDL_PRESSED;
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}
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if ( keyboard[VK_CAPITAL] & 0x01) {
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state |= KMOD_CAPS;
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kstate[SDLK_CAPSLOCK] = SDL_PRESSED;
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}
}
SDL_SetModState(state);
#endif /* !NO_GETKEYBOARDSTATE */
}
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/* The main Win32 event handler
DJM: This is no longer static as (DX5/DIB)_CreateWindow needs it
*/
LONG CALLBACK WinMessage(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
SDL_VideoDevice *this = current_video;
static int mouse_pressed = 0;
static int in_window = 0;
#ifdef WMMSG_DEBUG
fprintf(stderr, "Received windows message: ");
if ( msg > MAX_WMMSG ) {
fprintf(stderr, "%d", msg);
} else {
fprintf(stderr, "%s", wmtab[msg]);
}
fprintf(stderr, " -- 0x%X, 0x%X\n", wParam, lParam);
#endif
switch (msg) {
case WM_ACTIVATE: {
SDL_VideoDevice *this = current_video;
BOOL minimized;
Uint8 appstate;
minimized = HIWORD(wParam);
if ( !minimized && (LOWORD(wParam) != WA_INACTIVE) ) {
/* Gain the following states */
appstate = SDL_APPACTIVE|SDL_APPINPUTFOCUS;
if ( this->input_grab != SDL_GRAB_OFF ) {
WIN_GrabInput(this, SDL_GRAB_ON);
}
if ( !(SDL_GetAppState()&SDL_APPINPUTFOCUS) ) {
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if ( ! DDRAW_FULLSCREEN() ) {
DIB_SwapGamma(this);
}
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if ( WINDIB_FULLSCREEN() ) {
SDL_RestoreGameMode();
}
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}
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#if defined(_WIN32_WCE)
if ( WINDIB_FULLSCREEN() )
{
LoadAygshell();
if( aygshell )
SHFullScreen(SDL_Window, SHFS_HIDESTARTICON|SHFS_HIDETASKBAR|SHFS_HIDESIPBUTTON);
else
ShowWindow(FindWindow(TEXT("HHTaskBar"),NULL),SW_HIDE);
}
#endif
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posted = SDL_PrivateAppActive(1, appstate);
WIN_GetKeyboardState();
} else {
/* Lose the following states */
appstate = SDL_APPINPUTFOCUS;
if ( minimized ) {
appstate |= SDL_APPACTIVE;
}
if ( this->input_grab != SDL_GRAB_OFF ) {
WIN_GrabInput(this, SDL_GRAB_OFF);
}
if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
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if ( ! DDRAW_FULLSCREEN() ) {
DIB_SwapGamma(this);
}
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if ( WINDIB_FULLSCREEN() ) {
SDL_RestoreDesktopMode();
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#if defined(_WIN32_WCE)
LoadAygshell();
if( aygshell )
SHFullScreen(SDL_Window, SHFS_SHOWSTARTICON|SHFS_SHOWTASKBAR|SHFS_SHOWSIPBUTTON);
else
ShowWindow(FindWindow(TEXT("HHTaskBar"),NULL),SW_SHOW);
#endif
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}
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}
posted = SDL_PrivateAppActive(0, appstate);
}
return(0);
}
break;
case WM_MOUSEMOVE: {
/* Mouse is handled by DirectInput when fullscreen */
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if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
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Sint16 x, y;
/* mouse has entered the window */
if ( ! in_window ) {
#ifdef WM_MOUSELEAVE
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = SDL_Window;
_TrackMouseEvent(&tme);
#endif /* WM_MOUSELEAVE */
in_window = TRUE;
posted = SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
}
/* mouse has moved within the window */
x = LOWORD(lParam);
y = HIWORD(lParam);
if ( mouse_relative ) {
POINT center;
center.x = (SDL_VideoSurface->w/2);
center.y = (SDL_VideoSurface->h/2);
x -= (Sint16)center.x;
y -= (Sint16)center.y;
if ( x || y ) {
ClientToScreen(SDL_Window, ¢er);
SetCursorPos(center.x, center.y);
posted = SDL_PrivateMouseMotion(0, 1, x, y);
}
} else {
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#ifdef _WIN32_WCE
if (SDL_VideoSurface)
GapiTransform(this->hidden->userOrientation, this->hidden->hiresFix, &x, &y);
#endif
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posted = SDL_PrivateMouseMotion(0, 0, x, y);
}
}
}
return(0);
#ifdef WM_MOUSELEAVE
case WM_MOUSELEAVE: {
/* Mouse is handled by DirectInput when fullscreen */
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if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
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/* mouse has left the window */
/* or */
/* Elvis has left the building! */
posted = SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
}
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in_window = FALSE;
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}
return(0);
#endif /* WM_MOUSELEAVE */
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP: {
/* Mouse is handled by DirectInput when fullscreen */
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if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
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Sint16 x, y;
Uint8 button, state;
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/* DJM:
We want the SDL window to take focus so that
it acts like a normal windows "component"
(e.g. gains keyboard focus on a mouse click).
*/
SetFocus(SDL_Window);
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/* Figure out which button to use */
switch (msg) {
case WM_LBUTTONDOWN:
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button = SDL_BUTTON_LEFT;
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state = SDL_PRESSED;
break;
case WM_LBUTTONUP:
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button = SDL_BUTTON_LEFT;
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state = SDL_RELEASED;
break;
case WM_MBUTTONDOWN:
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button = SDL_BUTTON_MIDDLE;
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state = SDL_PRESSED;
break;
case WM_MBUTTONUP:
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button = SDL_BUTTON_MIDDLE;
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state = SDL_RELEASED;
break;
case WM_RBUTTONDOWN:
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button = SDL_BUTTON_RIGHT;
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state = SDL_PRESSED;
break;
case WM_RBUTTONUP:
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button = SDL_BUTTON_RIGHT;
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state = SDL_RELEASED;
break;
default:
/* Eh? Unknown button? */
return(0);
}
if ( state == SDL_PRESSED ) {
/* Grab mouse so we get up events */
if ( ++mouse_pressed > 0 ) {
SetCapture(hwnd);
}
} else {
/* Release mouse after all up events */
if ( --mouse_pressed <= 0 ) {
ReleaseCapture();
mouse_pressed = 0;
}
}
if ( mouse_relative ) {
/* RJR: March 28, 2000
report internal mouse position if in relative mode */
x = 0; y = 0;
} else {
x = (Sint16)LOWORD(lParam);
y = (Sint16)HIWORD(lParam);
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#ifdef _WIN32_WCE
if (SDL_VideoSurface)
GapiTransform(this->hidden->userOrientation, this->hidden->hiresFix, &x, &y);
#endif
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}
posted = SDL_PrivateMouseButton(
state, button, x, y);
}
}
return(0);
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#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
case WM_MOUSEWHEEL:
if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
int move = (short)HIWORD(wParam);
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if ( move ) {
Uint8 button;
if ( move > 0 )
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button = SDL_BUTTON_WHEELUP;
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else
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button = SDL_BUTTON_WHEELDOWN;
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posted = SDL_PrivateMouseButton(
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SDL_PRESSED, button, 0, 0);
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posted |= SDL_PrivateMouseButton(
SDL_RELEASED, button, 0, 0);
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}
}
return(0);
#endif
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#ifdef WM_GETMINMAXINFO
/* This message is sent as a way for us to "check" the values
* of a position change. If we don't like it, we can adjust
* the values before they are changed.
*/
case WM_GETMINMAXINFO: {
MINMAXINFO *info;
RECT size;
int x, y;
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int style;
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int width;
int height;
/* We don't want to clobber an internal resize */
if ( SDL_resizing )
return(0);
/* We allow resizing with the SDL_RESIZABLE flag */
if ( SDL_PublicSurface &&
(SDL_PublicSurface->flags & SDL_RESIZABLE) ) {
return(0);
}
/* Get the current position of our window */
GetWindowRect(SDL_Window, &size);
x = size.left;
y = size.top;
/* Calculate current width and height of our window */
size.top = 0;
size.left = 0;
if ( SDL_PublicSurface != NULL ) {
size.bottom = SDL_PublicSurface->h;
size.right = SDL_PublicSurface->w;
} else {
size.bottom = 0;
size.right = 0;
}
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/* DJM - according to the docs for GetMenu(), the
return value is undefined if hwnd is a child window.
Aparently it's too difficult for MS to check
inside their function, so I have to do it here.
*/
style = GetWindowLong(hwnd, GWL_STYLE);
AdjustWindowRect(
&size,
style,
style & WS_CHILDWINDOW ? FALSE
: GetMenu(hwnd) != NULL);
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width = size.right - size.left;
height = size.bottom - size.top;
/* Fix our size to the current size */
info = (MINMAXINFO *)lParam;
info->ptMaxSize.x = width;
info->ptMaxSize.y = height;
info->ptMaxPosition.x = x;
info->ptMaxPosition.y = y;
info->ptMinTrackSize.x = width;
info->ptMinTrackSize.y = height;
info->ptMaxTrackSize.x = width;
info->ptMaxTrackSize.y = height;
}
return(0);
#endif /* WM_GETMINMAXINFO */
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case WM_WINDOWPOSCHANGED: {
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SDL_VideoDevice *this = current_video;
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int w, h;
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GetClientRect(SDL_Window, &SDL_bounds);
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ClientToScreen(SDL_Window, (LPPOINT)&SDL_bounds);
ClientToScreen(SDL_Window, (LPPOINT)&SDL_bounds+1);
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if ( !SDL_resizing && !IsZoomed(SDL_Window) &&
SDL_PublicSurface &&
!(SDL_PublicSurface->flags & SDL_FULLSCREEN) ) {
SDL_windowX = SDL_bounds.left;
SDL_windowY = SDL_bounds.top;
}
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w = SDL_bounds.right-SDL_bounds.left;
h = SDL_bounds.bottom-SDL_bounds.top;
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if ( this->input_grab != SDL_GRAB_OFF ) {
ClipCursor(&SDL_bounds);
}
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if ( SDL_PublicSurface &&
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(SDL_PublicSurface->flags & SDL_RESIZABLE) ) {
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SDL_PrivateResize(w, h);
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}
}
break;
/* We need to set the cursor */
case WM_SETCURSOR: {
Uint16 hittest;
hittest = LOWORD(lParam);
if ( hittest == HTCLIENT ) {
SetCursor(SDL_hcursor);
return(TRUE);
}
}
break;
/* We are about to get palette focus! */
case WM_QUERYNEWPALETTE: {
WIN_RealizePalette(current_video);
return(TRUE);
}
break;
/* Another application changed the palette */
case WM_PALETTECHANGED: {
WIN_PaletteChanged(current_video, (HWND)wParam);
}
break;
/* We were occluded, refresh our display */
case WM_PAINT: {
HDC hdc;
PAINTSTRUCT ps;
hdc = BeginPaint(SDL_Window, &ps);
if ( current_video->screen &&
!(current_video->screen->flags & SDL_OPENGL) ) {
WIN_WinPAINT(current_video, hdc);
}
EndPaint(SDL_Window, &ps);
}
return(0);
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/* DJM: Send an expose event in this case */
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case WM_ERASEBKGND: {
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posted = SDL_PrivateExpose();
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}
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return(0);
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case WM_CLOSE: {
if ( (posted = SDL_PrivateQuit()) )
PostQuitMessage(0);
}
return(0);
case WM_DESTROY: {
PostQuitMessage(0);
}
return(0);
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#ifndef NO_GETKEYBOARDSTATE
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case WM_INPUTLANGCHANGE: {
codepage = GetCodePage();
}
return(TRUE);
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#endif
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default: {
/* Special handling by the video driver */
if (HandleMessage) {
return(HandleMessage(current_video,
hwnd, msg, wParam, lParam));
}
}
break;
}
return(DefWindowProc(hwnd, msg, wParam, lParam));
}
660
/* Allow the application handle to be stored and retrieved later */
661
static void *SDL_handle = NULL;
662
663
void SDL_SetModuleHandle(void *handle)
664
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{
SDL_handle = handle;
}
667
void *SDL_GetModuleHandle(void)
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669
670
671
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673
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{
void *handle;
if ( SDL_handle ) {
handle = SDL_handle;
} else {
handle = GetModuleHandle(NULL);
}
return(handle);
}
679
/* This allows the SDL_WINDOWID hack */
680
BOOL SDL_windowid = FALSE;
681
682
683
static int app_registered = 0;
684
/* Register the class for this application -- exported for winmain.c */
685
int SDL_RegisterApp(char *name, Uint32 style, void *hInst)
686
687
688
689
690
691
692
{
WNDCLASS class;
#ifdef WM_MOUSELEAVE
HMODULE handle;
#endif
/* Only do this once... */
693
if ( app_registered ) {
694
695
696
return(0);
}
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699
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701
702
703
#ifndef CS_BYTEALIGNCLIENT
#define CS_BYTEALIGNCLIENT 0
#endif
if ( ! name && ! SDL_Appname ) {
name = "SDL_app";
SDL_Appstyle = CS_BYTEALIGNCLIENT;
SDL_Instance = hInst ? hInst : SDL_GetModuleHandle();
704
705
}
706
if ( name ) {
707
#ifdef _WIN32_WCE
708
/* WinCE uses the UNICODE version */
709
710
int nLen = SDL_strlen(name)+1;
SDL_Appname = SDL_malloc(nLen*2);
711
MultiByteToWideChar(CP_ACP, 0, name, -1, SDL_Appname, nLen);
712
#else
713
714
715
int nLen = SDL_strlen(name)+1;
SDL_Appname = SDL_malloc(nLen);
SDL_strcpy(SDL_Appname, name);
716
#endif /* _WIN32_WCE */
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719
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723
724
SDL_Appstyle = style;
SDL_Instance = hInst ? hInst : SDL_GetModuleHandle();
}
/* Register the application class */
class.hCursor = NULL;
class.hIcon = LoadImage(SDL_Instance, SDL_Appname,
IMAGE_ICON,
725
726
727
0, 0, LR_DEFAULTCOLOR);
class.lpszMenuName = NULL;
class.lpszClassName = SDL_Appname;
728
class.hbrBackground = NULL;
729
730
class.hInstance = SDL_Instance;
class.style = SDL_Appstyle;
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732
733
734
735
736
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#ifdef HAVE_OPENGL
class.style |= CS_OWNDC;
#endif
class.lpfnWndProc = WinMessage;
class.cbWndExtra = 0;
class.cbClsExtra = 0;
if ( ! RegisterClass(&class) ) {
SDL_SetError("Couldn't register application class");
return(-1);
}
#ifdef WM_MOUSELEAVE
/* Get the version of TrackMouseEvent() we use */
_TrackMouseEvent = NULL;
handle = GetModuleHandle("USER32.DLL");
if ( handle ) {
_TrackMouseEvent = (BOOL (WINAPI *)(TRACKMOUSEEVENT *))GetProcAddress(handle, "TrackMouseEvent");
}
if ( _TrackMouseEvent == NULL ) {
_TrackMouseEvent = WIN_TrackMouseEvent;
}
#endif /* WM_MOUSELEAVE */
754
#ifndef NO_GETKEYBOARDSTATE
755
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757
/* Initialise variables for SDL_ToUnicode() */
codepage = GetCodePage();
SDL_ToUnicode = Is9xME() ? ToUnicode9xME : ToUnicode;
758
#endif
759
760
app_registered = 1;
761
762
763
return(0);
}
764
/* Unregisters the windowclass registered in SDL_RegisterApp above. */
765
void SDL_UnregisterApp()
766
767
768
769
{
WNDCLASS class;
/* SDL_RegisterApp might not have been called before */
770
771
772
if ( app_registered ) {
/* Check for any registered window classes. */
if ( GetClassInfo(SDL_Instance, SDL_Appname, &class) ) {
773
774
UnregisterClass(SDL_Appname, SDL_Instance);
}
775
app_registered = 0;
776
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778
}
}
779
#ifndef NO_GETKEYBOARDSTATE
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784
785
/* JFP: Implementation of ToUnicode() that works on 9x/ME/2K/XP */
static int Is9xME()
{
OSVERSIONINFO info;
786
SDL_memset(&info, 0, sizeof(info));
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789
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791
792
793
794
795
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800
info.dwOSVersionInfoSize = sizeof(info);
if (!GetVersionEx(&info)) {
return 0;
}
return (info.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS);
}
static int GetCodePage()
{
char buff[8];
int lcid = MAKELCID(LOWORD(GetKeyboardLayout(0)), SORT_DEFAULT);
int cp = GetACP();
if (GetLocaleInfo(lcid, LOCALE_IDEFAULTANSICODEPAGE, buff, sizeof(buff))) {
801
cp = SDL_strtol(buff, NULL, 0);
802
803
804
805
806
807
808
809
810
811
812
813
814
815
}
return cp;
}
static int WINAPI ToUnicode9xME(UINT vkey, UINT scancode, PBYTE keystate, LPWSTR wchars, int wsize, UINT flags)
{
BYTE chars[2];
if (ToAsciiEx(vkey, scancode, keystate, (WORD*)chars, 0, GetKeyboardLayout(0)) == 1) {
return MultiByteToWideChar(codepage, 0, chars, 1, wchars, wsize);
}
return 0;
}
816
#endif /* !NO_GETKEYBOARDSTATE */