W7 CrashFix with WindowMode

#include <windows.h>
#include <stdio.h>

DEVMODE lastDevmode;
DEVMODE devmodeBW;
int     exitThread = 0;

// Constant Values
const int BW_FULL_POS_X = -5;
const int BW_FULL_POS_Y = -31;
const int BW_WIDTH      = 650;
const int BW_HEIGHT     = 517;

// FUNCTION PROTOTYPES
DEVMODE GetCurrentDeviceMode();
int     CheckForegroundWindow();
bool    IsBroodWarWindow(HWND hWnd);


int main(char argc, char* argv[]) {
    printf("Press Alt+F1 if you can't scroll inside BW.\n");
    printf("Press Alt+F11 to make BW the TOPMOST window.\n");
    printf("press any key to exit...");

    DEVMODE d = GetCurrentDeviceMode();
    if (d.dmSize == 0) {
        ExitProcess(1);
    }
    memcpy(&lastDevmode, &d, sizeof(DEVMODE));
    memcpy(&devmodeBW, &d, sizeof(DEVMODE));
    devmodeBW.dmPelsWidth = 640;
    devmodeBW.dmPelsHeight = 480;

    DWORD threadId = 0;
    HANDLE hThread = CreateThread(0, 0, (LPTHREAD_START_ROUTINE)CheckForegroundWindow, 0, 0, &threadId);

    getchar();
    exitThread = 1;
    ChangeDisplaySettings(&lastDevmode, 0);
}

DEVMODE GetCurrentDeviceMode() {
    DISPLAY_DEVICE d;
    DEVMODE devMode;
    d.cb = sizeof(DISPLAY_DEVICE); 
    devMode.dmSize = sizeof(DEVMODE);
    int devNum = 0;
    int result = 0;
	
    do {
        result = EnumDisplayDevices(0, devNum, &d, 0);
        // check if it's the main device
        if (result && ((d.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) != 0)) {
            EnumDisplaySettings(d.DeviceName, -1, &devMode);
            return devMode;
        }
        devNum++;
    } while (result);

    // Current Devicemode not found
    devMode.dmSize = 0;
    return devMode;
}

int CheckForegroundWindow() {
    HWND hWndBW = 0;
    bool isInsideBW = false;

    while(!exitThread){
        // check if BroodWar is started, if not we wait for it
        do {
            Sleep(250);
            hWndBW = FindWindow("SWarClass", 0);
        } while (!hWndBW);

        // BroodWar is running, check if it's the ForeGroundWindow
        HWND fgWindow = GetForegroundWindow();
        if (IsBroodWarWindow(fgWindow)) {
            if (!isInsideBW) {
                ChangeDisplaySettings(&devmodeBW, 0);
            }
            isInsideBW = true;
        } else {
            if (isInsideBW) {
                ChangeDisplaySettings(&lastDevmode, 0);
            }
            isInsideBW = false;
        }

        // adjust the broodwar window position
        RECT rectBW;
        GetWindowRect(hWndBW, &rectBW);
        if (isInsideBW && (rectBW.left != BW_FULL_POS_X || rectBW.top != BW_FULL_POS_Y)) {
            SetWindowPos(hWndBW, 0, BW_FULL_POS_X, BW_FULL_POS_Y, BW_WIDTH, BW_HEIGHT, 0);
        }
        if (!isInsideBW && rectBW.left == BW_FULL_POS_X && rectBW.top == BW_FULL_POS_Y) {
            // Reset the BW window position so it can be draged again
            SetWindowPos(hWndBW, 0, 0, 0, BW_WIDTH, BW_HEIGHT, 0);
        }
        
    }

    return 0;
}

bool IsBroodWarWindow(HWND hWnd) {
    char szWindowClass[255];
    int size = RealGetWindowClass(hWnd, szWindowClass, 255);
    int cmpSWC = strncmp(szWindowClass, "SWarClass", 9);
    int cmpSDD = strncmp(szWindowClass, "#32770", 6); // b.net's ugly interface

    return (cmpSWC == 0) || (cmpSDD == 0);
}