Bitmap bit; private void Form1_Load(object sender, EventArgs e) { bit = new Bitmap("heart.bmp"); bit.MakeTransparent(Color.Blue); }2. 透過OnPaint方法來載入要在表單中顯示的圖片
protected override void OnPaint(PaintEventArgs e) { e.Graphics.DrawImage((Image)bit, new Point(0,0)); }
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