GDI+ paint with brush(alpha blending)
void CGdiplusDemoView::OnDraw(CDC* pDC)
{
Graphics g(pDC->m_hDC);
SolidBrush brush(Color(128, 255, 0, 0));
g.FillRectangle(&brush, 50, 100, 200, 100);
brush.SetColor(Color(128, 0, 255, 0));
g.FillEllipse(&brush, 150, 150, 200, 100);
brush.SetColor(Color(128, 255, 255, 0));
g.FillPie(&brush, 50, 130, 200, 200, 135, 90);
brush.SetColor(Color(128, 0, 0, 255));
Point points[] = {
Point(80, 50), Point(170, 70), Point(220, 30),
Point(200, 110), Point(150, 90), Point(100, 150)
};
/*
enum FillMode
{
FillModeAlternate, // 0
FillModeWinding // 1
};
*/
g.FillClosedCurve(&brush, points, 6, FillModeAlternate, 1);
}
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