Keskustelu: Ohjelmointikysymykset: C++: Tyyppimuunnos?

BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag)
{
    GLuint        PixelFormat;            // Holds The Results After Searching For A Match
    WNDCLASS    wc;                        // Windows Class Structure
    DWORD        dwExStyle;                // Window Extended Style
    DWORD        dwStyle;                // Window Style
    RECT        WindowRect;                // Grabs Rectangle Upper Left / Lower Right Values
    WindowRect.left=(long)0;            // Set Left Value To 0
    WindowRect.right=(long)width;        // Set Right Value To Requested Width
    WindowRect.top=(long)0;                // Set Top Value To 0
    WindowRect.bottom=(long)height;        // Set Bottom Value To Requested Height

    fullscreen=fullscreenflag;            // Set The Global Fullscreen Flag

    hInstance            = GetModuleHandle(NULL);                // Grab An Instance For Our Window
    wc.style            = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;    // Redraw On Size, And Own DC For Window.
    wc.lpfnWndProc        = (WNDPROC) WndProc;                    // WndProc Handles Messages
    wc.cbClsExtra        = 0;                                    // No Extra Window Data
    wc.cbWndExtra        = 0;                                    // No Extra Window Data
    wc.hInstance        = hInstance;                            // Set The Instance
    wc.hIcon            = LoadIcon(NULL, IDI_WINLOGO);            // Load The Default Icon
    wc.hCursor            = LoadCursor(NULL, IDC_ARROW);            // Load The Arrow Pointer
    wc.hbrBackground    = NULL;                                    // No Background Required For GL
    wc.lpszMenuName        = NULL;                                    // We Don't Want A Menu
    wc.lpszClassName    = (LPCWSTR)L"OpenGL";                    // Set The Class Name

    if (!RegisterClass(&wc))                                    // Attempt To Register The Window Class
    {
        MessageBox(NULL,(LPCWSTR)L"Failed To Register The Window Class.",(LPCWSTR)L"ERROR",MB_OK|MB_ICONEXCLAMATION);
        return FALSE;                                            // Return FALSE
    }

    if (fullscreen)                                                // Attempt Fullscreen Mode?
    {
        DEVMODE dmScreenSettings;                                // Device Mode
        memset(&dmScreenSettings,0,sizeof(dmScreenSettings));    // Makes Sure Memory's Cleared
        dmScreenSettings.dmSize=sizeof(dmScreenSettings);        // Size Of The Devmode Structure
        dmScreenSettings.dmPelsWidth    = width;                // Selected Screen Width
        dmScreenSettings.dmPelsHeight    = height;                // Selected Screen Height
        dmScreenSettings.dmBitsPerPel    = bits;                    // Selected Bits Per Pixel
        dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

        // Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
        if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
        {
            // If The Mode Fails, Offer Two Options.  Quit Or Use Windowed Mode.
            if (MessageBox(NULL,(LPCWSTR)L"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?",(LPCWSTR)L"NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
            {
                fullscreen=FALSE;        // Windowed Mode Selected.  Fullscreen = FALSE
            }
            else
            {
                // Pop Up A Message Box Letting User Know The Program Is Closing.
                MessageBox(NULL,(LPCWSTR)L"Program Will Now Close.",(LPCWSTR)L"ERROR",MB_OK|MB_ICONSTOP);
                return FALSE;                                    // Return FALSE
            }
        }
    }

    if (fullscreen)                                                // Are We Still In Fullscreen Mode?
    {
        dwExStyle=WS_EX_APPWINDOW;                                // Window Extended Style
        dwStyle=WS_POPUP;                                        // Windows Style
        ShowCursor(FALSE);                                        // Hide Mouse Pointer
    }
    else
    {
        dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;            // Window Extended Style
        dwStyle=WS_OVERLAPPEDWINDOW;                            // Windows Style
    }

    AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);        // Adjust Window To True Requested Size

    //Tähän se toiminta, joka muuttaa muuttujan title LPCWSTR-muotoon? En saanut toimimaan Metabolixin koodia soveltamalla

    // Create The Window
    if (!(hWnd=CreateWindowEx(    dwExStyle,                            // Extended Style For The Window
                                (LPCWSTR)L"OpenGL",                    // Class Name
                                title,                        // Window Title
                                dwStyle |                            // Defined Window Style
                                WS_CLIPSIBLINGS |                    // Required Window Style
                                WS_CLIPCHILDREN,                    // Required Window Style
                                0, 0,                                // Window Position
                                WindowRect.right-WindowRect.left,    // Calculate Window Width
                                WindowRect.bottom-WindowRect.top,    // Calculate Window Height
                                NULL,                                // No Parent Window
                                NULL,                                // No Menu
                                hInstance,                            // Instance
                                NULL)))                                // Dont Pass Anything To WM_CREATE

BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag)


	const int size = (strlen(title) + 1) * sizeof(wchar_t);
	wchar_t *wstr = malloc(size);
	wsprintf(wstr, "%hs", title);

    // Create The Window
    if (!(hWnd=CreateWindowEx(    dwExStyle,                            // Extended Style For The Window
                                (LPCWSTR)L"OpenGL",                    // Class Name
                                title,                        // Window Title
                                dwStyle |                            // Defined Window Style
                                WS_CLIPSIBLINGS |                    // Required Window Style
                                WS_CLIPCHILDREN,                    // Required Window Style
                                0, 0,                                // Window Position
                                WindowRect.right-WindowRect.left,    // Calculate Window Width
                                WindowRect.bottom-WindowRect.top,    // Calculate Window Height
                                NULL,                                // No Parent Window
                                NULL,                                // No Menu
                                hInstance,                            // Instance
                                NULL)))                                // Dont Pass Anything To WM_CREATE
    {
        KillGLWindow();                                // Reset The Display
        MessageBox(NULL,(LPCWSTR)L"Window Creation Error.",(LPCWSTR)L"ERROR",MB_OK|MB_ICONEXCLAMATION);
        return FALSE;                                // Return FALSE
    }

	free(wstr);