visual c＃ - onPaint和透明度

Question

我正在制作一个带有两个半透明文本的简单表格，并将其放入绘画事件中。 只有当我把形状扩大时，文字会变得更暗，更有颗粒感。 我想要更深的颜色，但不是颗粒状的效果。

这是我的代码片段：

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();
}    

提前致谢

Answer 1

使用PaintEventArgs中的Graphics对象。

更改

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

至

System.Drawing.Graphics formGraphics = e.Graphics;

并删除

formGraphics.Dispose();