src/video/windows/SDL_windowsmodes.c
author Gabriel Jacobo <gabomdq@gmail.com>
Wed, 24 Apr 2013 11:49:52 -0300
changeset 7102 b9fa5a2acbfd
parent 7037 3fedf1f25b94
child 8086 b744b3f8754b
permissions -rw-r--r--
Bug 1786 - memory leak in WIN_GetDisplayModes by Marcel Bakker
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/*
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  Simple DirectMedia Layer
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700f1b25f77f Happy New Year!
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  Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_config.h"
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#if SDL_VIDEO_DRIVER_WINDOWS
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#include "SDL_windowsvideo.h"
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/* Windows CE compatibility */
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#ifndef CDS_FULLSCREEN
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#define CDS_FULLSCREEN 0
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#endif
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static SDL_bool
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WIN_GetDisplayMode(LPCTSTR deviceName, DWORD index, SDL_DisplayMode * mode)
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{
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    SDL_DisplayModeData *data;
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    DEVMODE devmode;
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    HDC hdc;
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    devmode.dmSize = sizeof(devmode);
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    devmode.dmDriverExtra = 0;
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    if (!EnumDisplaySettings(deviceName, index, &devmode)) {
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        return SDL_FALSE;
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    }
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    data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data));
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    if (!data) {
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        return SDL_FALSE;
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    }
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    data->DeviceMode = devmode;
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    data->DeviceMode.dmFields =
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        (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY |
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         DM_DISPLAYFLAGS);
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    /* Fill in the mode information */
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    mode->format = SDL_PIXELFORMAT_UNKNOWN;
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    mode->w = devmode.dmPelsWidth;
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    mode->h = devmode.dmPelsHeight;
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    mode->refresh_rate = devmode.dmDisplayFrequency;
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    mode->driverdata = data;
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    if (index == ENUM_CURRENT_SETTINGS
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        && (hdc = CreateDC(deviceName, NULL, NULL, NULL)) != NULL) {
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        char bmi_data[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)];
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        LPBITMAPINFO bmi;
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        HBITMAP hbm;
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        SDL_zero(bmi_data);
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        bmi = (LPBITMAPINFO) bmi_data;
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        bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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        hbm = CreateCompatibleBitmap(hdc, 1, 1);
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        GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS);
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        GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS);
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        DeleteObject(hbm);
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        DeleteDC(hdc);
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        if (bmi->bmiHeader.biCompression == BI_BITFIELDS) {
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            switch (*(Uint32 *) bmi->bmiColors) {
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            case 0x00FF0000:
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                mode->format = SDL_PIXELFORMAT_RGB888;
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                break;
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            case 0x000000FF:
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                mode->format = SDL_PIXELFORMAT_BGR888;
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                break;
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            case 0xF800:
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                mode->format = SDL_PIXELFORMAT_RGB565;
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                break;
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            case 0x7C00:
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                mode->format = SDL_PIXELFORMAT_RGB555;
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                break;
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            }
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        } else if (bmi->bmiHeader.biBitCount == 8) {
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            mode->format = SDL_PIXELFORMAT_INDEX8;
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        } else if (bmi->bmiHeader.biBitCount == 4) {
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            mode->format = SDL_PIXELFORMAT_INDEX4LSB;
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        }
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    } else {
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        /* FIXME: Can we tell what this will be? */
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        if ((devmode.dmFields & DM_BITSPERPEL) == DM_BITSPERPEL) {
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            switch (devmode.dmBitsPerPel) {
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            case 32:
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                mode->format = SDL_PIXELFORMAT_RGB888;
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                break;
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            case 24:
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                mode->format = SDL_PIXELFORMAT_RGB24;
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                break;
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            case 16:
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                mode->format = SDL_PIXELFORMAT_RGB565;
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                break;
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            case 15:
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                mode->format = SDL_PIXELFORMAT_RGB555;
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                break;
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            case 8:
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                mode->format = SDL_PIXELFORMAT_INDEX8;
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                break;
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            case 4:
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                mode->format = SDL_PIXELFORMAT_INDEX4LSB;
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                break;
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            }
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        }
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    }
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    return SDL_TRUE;
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}
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static SDL_bool
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WIN_AddDisplay(LPTSTR DeviceName)
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{
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    SDL_VideoDisplay display;
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    SDL_DisplayData *displaydata;
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    SDL_DisplayMode mode;
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    DISPLAY_DEVICE device;
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#ifdef DEBUG_MODES
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    printf("Display: %s\n", WIN_StringToUTF8(DeviceName));
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#endif
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    if (!WIN_GetDisplayMode(DeviceName, ENUM_CURRENT_SETTINGS, &mode)) {
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        return SDL_FALSE;
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    }
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    displaydata = (SDL_DisplayData *) SDL_malloc(sizeof(*displaydata));
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    if (!displaydata) {
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        return SDL_FALSE;
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   142
    }
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    SDL_memcpy(displaydata->DeviceName, DeviceName,
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               sizeof(displaydata->DeviceName));
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    SDL_zero(display);
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    device.cb = sizeof(device);
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    if (EnumDisplayDevices(DeviceName, 0, &device, 0)) {
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        display.name = WIN_StringToUTF8(device.DeviceString);
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    }
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    display.desktop_mode = mode;
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    display.current_mode = mode;
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    display.driverdata = displaydata;
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    SDL_AddVideoDisplay(&display);
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    SDL_free(display.name);
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    return SDL_TRUE;
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}
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   158
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int
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WIN_InitModes(_THIS)
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{
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    int pass;
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    DWORD i, j, count;
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    DISPLAY_DEVICE device;
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    device.cb = sizeof(device);
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   167
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   168
    /* Get the primary display in the first pass */
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    for (pass = 0; pass < 2; ++pass) {
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        for (i = 0; ; ++i) {
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            TCHAR DeviceName[32];
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   172
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            if (!EnumDisplayDevices(NULL, i, &device, 0)) {
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                break;
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   175
            }
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   176
            if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) {
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                continue;
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   178
            }
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   179
            if (pass == 0) {
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                if (!(device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)) {
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                    continue;
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   182
                }
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   183
            } else {
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   184
                if (device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
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                    continue;
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   186
                }
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            }
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            SDL_memcpy(DeviceName, device.DeviceName, sizeof(DeviceName));
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#ifdef DEBUG_MODES
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            printf("Device: %s\n", WIN_StringToUTF8(DeviceName));
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   191
#endif
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   192
            count = 0;
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            for (j = 0; ; ++j) {
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   194
                if (!EnumDisplayDevices(DeviceName, j, &device, 0)) {
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                    break;
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   196
                }
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                if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) {
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                    continue;
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   199
                }
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                if (pass == 0) {
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                    if (!(device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)) {
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                        continue;
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   203
                    }
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   204
                } else {
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                    if (device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
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                        continue;
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   207
                    }
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   208
                }
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   209
                count += WIN_AddDisplay(device.DeviceName);
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   210
            }
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   211
            if (count == 0) {
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   212
                WIN_AddDisplay(DeviceName);
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   213
            }
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        }
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   215
    }
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   216
    if (_this->num_displays == 0) {
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   217
        return SDL_SetError("No displays available");
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   218
    }
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   219
    return 0;
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}
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   221
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int
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WIN_GetDisplayBounds(_THIS, SDL_VideoDisplay * display, SDL_Rect * rect)
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{
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    SDL_DisplayModeData *data = (SDL_DisplayModeData *) display->current_mode.driverdata;
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    rect->x = (int)data->DeviceMode.dmPosition.x;
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    rect->y = (int)data->DeviceMode.dmPosition.y;
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   229
    rect->w = data->DeviceMode.dmPelsWidth;
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   230
    rect->h = data->DeviceMode.dmPelsHeight;
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   231
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    return 0;
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   233
}
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   234
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void
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WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
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{
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    SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;
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   239
    DWORD i;
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   240
    SDL_DisplayMode mode;
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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    for (i = 0;; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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        if (!WIN_GetDisplayMode(data->DeviceName, i, &mode)) {
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            break;
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   245
        }
5305
75f5ff92ad08 Fixed a host of issues with Windows fullscreen modes. Toggling fullscreen OpenGL works now in my test environment.
Sam Lantinga <slouken@libsdl.org>
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   246
        if (SDL_ISPIXELFORMAT_INDEXED(mode.format)) {
75f5ff92ad08 Fixed a host of issues with Windows fullscreen modes. Toggling fullscreen OpenGL works now in my test environment.
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   247
            /* We don't support palettized modes now */
7102
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Gabriel Jacobo <gabomdq@gmail.com>
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            SDL_free(mode.driverdata);
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   249
            continue;
75f5ff92ad08 Fixed a host of issues with Windows fullscreen modes. Toggling fullscreen OpenGL works now in my test environment.
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   250
        }
3521
76f9b76ddf0f Don't add any renderers if you can't add any displays
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   251
        if (mode.format != SDL_PIXELFORMAT_UNKNOWN) {
3500
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   252
            if (!SDL_AddDisplayMode(display, &mode)) {
3175
e6c113f1ea43 Fixed support for 4bpp video modes enumeration, otherwise mode with zero bpp appears in the list.
Mike Gorchak <lestat@i.com.ua>
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   253
                SDL_free(mode.driverdata);
3186
Sam Lantinga <slouken@libsdl.org>
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   254
            }
3521
76f9b76ddf0f Don't add any renderers if you can't add any displays
Sam Lantinga <slouken@libsdl.org>
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   255
        }
7102
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Gabriel Jacobo <gabomdq@gmail.com>
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   256
        else {
b9fa5a2acbfd Bug 1786 - memory leak in WIN_GetDisplayModes by Marcel Bakker
Gabriel Jacobo <gabomdq@gmail.com>
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   257
            SDL_free(mode.driverdata);
b9fa5a2acbfd Bug 1786 - memory leak in WIN_GetDisplayModes by Marcel Bakker
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   258
        }
1895
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   259
    }
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}
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   261
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   262
int
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   263
WIN_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
1895
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   264
{
3500
4b594623401b Work in progress on multi-display support:
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diff changeset
   265
    SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   266
    SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   267
    LONG status;
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3097
diff changeset
   268
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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   269
    status =
3500
4b594623401b Work in progress on multi-display support:
Sam Lantinga <slouken@libsdl.org>
parents: 3186
diff changeset
   270
        ChangeDisplaySettingsEx(displaydata->DeviceName, &data->DeviceMode,
4b594623401b Work in progress on multi-display support:
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parents: 3186
diff changeset
   271
                                NULL, CDS_FULLSCREEN, NULL);
5305
75f5ff92ad08 Fixed a host of issues with Windows fullscreen modes. Toggling fullscreen OpenGL works now in my test environment.
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   272
    if (status != DISP_CHANGE_SUCCESSFUL) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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   273
        const char *reason = "Unknown reason";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   274
        switch (status) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   275
        case DISP_CHANGE_BADFLAGS:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   276
            reason = "DISP_CHANGE_BADFLAGS";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   277
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   278
        case DISP_CHANGE_BADMODE:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   279
            reason = "DISP_CHANGE_BADMODE";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   280
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   281
        case DISP_CHANGE_BADPARAM:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   282
            reason = "DISP_CHANGE_BADPARAM";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   283
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   284
        case DISP_CHANGE_FAILED:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   285
            reason = "DISP_CHANGE_FAILED";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   286
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   287
        }
7037
3fedf1f25b94 Make SDL_SetError and friends unconditionally return -1.
Ryan C. Gordon <icculus@icculus.org>
parents: 6885
diff changeset
   288
        return SDL_SetError("ChangeDisplaySettingsEx() failed: %s", reason);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   289
    }
5305
75f5ff92ad08 Fixed a host of issues with Windows fullscreen modes. Toggling fullscreen OpenGL works now in my test environment.
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   290
    EnumDisplaySettings(displaydata->DeviceName, ENUM_CURRENT_SETTINGS, &data->DeviceMode);
75f5ff92ad08 Fixed a host of issues with Windows fullscreen modes. Toggling fullscreen OpenGL works now in my test environment.
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   291
    return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   292
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   293
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   294
void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   295
WIN_QuitModes(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   296
{
5305
75f5ff92ad08 Fixed a host of issues with Windows fullscreen modes. Toggling fullscreen OpenGL works now in my test environment.
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   297
    /* All fullscreen windows should have restored modes by now */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   298
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   299
6044
35448a5ea044 Lots of fixes importing SDL source wholesale into a new iOS project
Sam Lantinga <slouken@libsdl.org>
parents: 5535
diff changeset
   300
#endif /* SDL_VIDEO_DRIVER_WINDOWS */
35448a5ea044 Lots of fixes importing SDL source wholesale into a new iOS project
Sam Lantinga <slouken@libsdl.org>
parents: 5535
diff changeset
   301
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   302
/* vi: set ts=4 sw=4 expandtab: */