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C-/C++-Quelltext

BOOL GetDisplayMonitorInfo(int nDeviceIndex, LPSTR lpszMonitorInfo)
{
    FARPROC EnumDisplayDevices;
    HINSTANCE  hInstUser32;
    DISPLAY_DEVICE DispDev; 
    char szSaveDeviceName[33];  // 32 + 1 for the null-terminator

    BOOL bRet = TRUE;
    HRESULT hr;
    
    hInstUser32 = LoadLibrary("c:\\windows\User32.DLL");
    if (!hInstUser32) return FALSE;  
    
    // Get the address of the EnumDisplayDevices function

    EnumDisplayDevices = (FARPROC)GetProcAddress(hInstUser32,"EnumDisplayDevicesA");
    if (!EnumDisplayDevices) {
        FreeLibrary(hInstUser32);
        return FALSE;
    }

    ZeroMemory(&DispDev, sizeof(DispDev));
    DispDev.cb = sizeof(DispDev); 
    
    // After the first call to EnumDisplayDevices, 

    // DispDev.DeviceString is the adapter name

    if (EnumDisplayDevices(NULL, nDeviceIndex, &DispDev, 0)) 
    {  
        hr = StringCchCopy(szSaveDeviceName, 33, DispDev.DeviceName);
        if (FAILED(hr))
        {
        // TODO: write error handler

        }
        
        // After second call, DispDev.DeviceString is the 

        // monitor name for that device 

        EnumDisplayDevices(szSaveDeviceName, 0, &DispDev, 0);   
        
        // In the following, lpszMonitorInfo must be 128 + 1 for 

        // the null-terminator.

        hr = StringCchCopy(lpszMonitorInfo, 129, DispDev.DeviceString);
        if (FAILED(hr))
        {
        // TODO: write error handler

        }
        
    } else    {
        bRet = FALSE;
    }

    FreeLibrary(hInstUser32);

    return bRet;
}