vb.net中更改表单的像素颜色的问题 [英] Problem with change form's pixel color in vb.net

问题描述

嗨 我正在尝试更改表单的像素颜色，但没有任何改变.

Hi I''m trying to change the color of pixels for my form but nothing changed.

<pre lang="vb"><br />
       private sub mybtn_click()  <br />
       Dim MyPixel As System.Drawing.Bitmap<br />
       Dim myColor As System.Drawing.Color<br />
        myColor = System.Drawing.Color.FromArgb(0, 0, 0)<br />
        MyPixel = New Bitmap(Me.Width, Me.Height)<br />
        For i As Integer = 0 To 100<br />
            For j As Integer = 0 To 100<br />
                MyPixel.SetPixel(i, j, myColor)<br />
                <br />
            Next j<br />
        Next <br />
end sub<br />
</pre>

运行后，当我单击我的btn时，我的像素颜色更改了，但是我看不到新颜色.为什么?

after run when i click on my btn my pixels color changed but i can''t see the new color. why?

推荐答案

好，您设置像素的颜色，但是您无处将新的位图绘制到窗体上.

Well, you set the pixels'' colour, but you nowhere paint your new bitmap onto your form.

那我怎么画呢?我必须重新绘制表格吗?

So how can I paint it? I must repaint my form?

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