GDI-FillRgn用画刷填充区域

    
    HRGN hrgn1 = CreateRectRgn(10, 10, 100, 100);//创建矩形区域
    HRGN hrgn2 = CreateEllipticRgn(150, 150, 250, 250);//创建椭圆区域
    HRGN hrgn= CreateRectRgn(0, 0, 0, 0);
    
    int n1=::CombineRgn(hrgn, hrgn1, hrgn2, RGN_OR);  //将两个区域组合为一个新区域
        

    HDC hdc = ::GetDC(m_hWnd);
    int n = SelectClipRgn(hdc, hrgn);//选择剪切区域

    HBRUSH hbr = CreateSolidBrush(RGB(0, 0, 255));    //单色的画刷
    BOOL b = FillRgn(hdc, hrgn, hbr); //用画刷填充区域
    /*
    参数1：HDC hdc
    参数2：HRGN hrgn  区域
    参数3:HBRUSH hbr 画刷

    
    */

    DeleteObject(hbr);
    DeleteObject(hrgn);
    ::ReleaseDC(m_hWnd, hdc);