stack overflow post support code

    glClearColor(1, 0, 0, 1);

    glClear(GL_COLOR_BUFFER_BIT);

    SwapBuffers(hdc);

    long width = drawArea.right - drawArea.left, height = drawArea.bottom - drawArea.top;

    PAINTSTRUCT ps;
    HDC hdc = BeginPaint(hwnd, &ps);

    HDC memDC = CreateCompatibleDC(hdc);

    BITMAPINFO bmi = { 0 };
    bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    bmi.bmiHeader.biWidth = width;
    bmi.bmiHeader.biHeight = -height;
    bmi.bmiHeader.biPlanes = 1;
    bmi.bmiHeader.biBitCount = 32; // ARGB
    bmi.bmiHeader.biCompression = BI_RGB;

    HBITMAP hbitmap = CreateDIBitmap(hdc, &bmi.bmiHeader, CBM_INIT, content, &bmi, DIB_RGB_COLORS);

    HBITMAP oldBitmap = (HBITMAP)SelectObject(memDC, hbitmap);

    BitBlt(hdc, drawArea.left, drawArea.top, width, height, memDC, 0, 0, SRCCOPY);

    //TransparentBlt(hdc, drawArea.left, drawArea.top, width, height, memDC, 0, 0, width, height, RGB(0, 0, 0));

    SelectObject(memDC, oldBitmap);

    DeleteDC(memDC);

    EndPaint(hwnd, &ps);