Richtextbox mousemove event文本的颜色是

Question

有没有办法使用mousemove事件来确定文本在RichTextBox中的颜色？我想避免使用Richtextbox.Select，因为它在鼠标移动的任何位置添加了一个小选择栏。

private void rtbComputerstatus_MouseMove(object sender, MouseEventArgs e) 
{ 
    int c = rtbComputerstatus.GetCharIndexFromPosition(new Point(e.X, e.Y)); 

    rtbComputerstatus.Select(c, 1); 

    if (rtbComputerstatus.SelectionColor == Color.Blue) 
     rtbComputerstatus.Cursor = Cursors.Hand; 
    else 
     rtbComputerstatus.Cursor = Cursors.Default; 
} 

Answer 1

只是在黑暗中一枪，但会下面的工作？

private void rtbComputerstatus_MouseMove(object sender, MouseEventArgs e) 
    { 
     if (rtbComputerstatus.ForeColor.ToKnownColor() == KnownColor.Blue) 
      rtbComputerstatus.Cursor = Cursors.Hand; 
     else 
      rtbComputerstatus.Cursor = Cursors.Default; 
    } 

我认为这将检查刚刚选定的文本：

private void rtbComputerstatus_MouseMove(object sender, MouseEventArgs e) 
    { 

     if (rtbComputerstatus.SelectionColor.ToKnownColor() == KnownColor.Blue) 
      rtbComputerstatus.Cursor = Cursors.Hand; 
     else 
      rtbComputerstatus.Cursor = Cursors.Default; 

    } 

Answer 2

你可以尝试这样的事情，从这个MSDN Forum answer of JoOls修改，它会给你的鼠标下的像素的颜色。

private void rtbComputerstatus_MouseMove(object sender, MouseEventArgs e) 
{ 
    Point cursorPoint = Cursor.Position; 
    Bitmap bm = new Bitmap(1, 1); 
    Graphics g = Graphics.FromImage(bm); 
    g.CopyFromScreen(cursorPoint, new Point(), new Size(1, 1)); 
    Color pixelColor = bm.GetPixel(0, 0); 
    g.Dispose(); 
    bm.Dispose(); 
    if (pixelColor.ToArgb().Equals(Color.Blue.ToArgb())) 
    { 
     if (rtbComputerstatus.Cursor != Cursors.Hand) 
      rtbComputerstatus.Cursor = Cursors.Hand; 
    } 
    else 
    { 
     if(rtbComputerstatus.Cursor != Cursors.Default) 
      rtbComputerstatus.Cursor = Cursors.Default; 
    } 
}