visual c＃ - onPaint和透明度

Question

我正在制作一个简单的窗体，其中有两个半透明文本 ，我把它放在绘画事件中。只有当我扩大形式时，文字会变得更暗和颗粒感。 actualy我想要更深的颜色，但不是粒状效果。

这里是我的代码片段：

private void sbfToolBox_Paint(object sender, PaintEventArgs e) 
{ 
    System.Drawing.Graphics formGraphics = this.CreateGraphics(); 
    formGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; 
    string drawString = "tekst"; 
    System.Drawing.Font drawFont = new System.Drawing.Font("Arial", 50); 
    Color color_red = Color.FromArgb(30, 100, 0, 0); 
    Color color_cyan = Color.FromArgb(30, 0, 100, 100); 
    System.Drawing.SolidBrush brush_red = new System.Drawing.SolidBrush(color_red); 
    System.Drawing.SolidBrush brush_cyan = new System.Drawing.SolidBrush(color_cyan); 
    float x = 0.0F; 
    float x2 = 20.0F; 
    float y = 50.0F; 
    formGraphics.DrawString(drawString, drawFont, brush_red, x, y); 
    formGraphics.DrawString(drawString, drawFont, brush_cyan, x2, y); 
    drawFont.Dispose(); 
    brush_red.Dispose(); 
    brush_cyan.Dispose(); 
    formGraphics.Dispose(); 
}  

在此先感谢

Answer 1

使用图形从PaintEventArgs的对象。

变化

System.Drawing.Graphics formGraphics = this.CreateGraphics(); 

要

System.Drawing.Graphics formGraphics = e.Graphics; 

，并删除

formGraphics.Dispose();