Question

有没有办法使用RichTextBox事件确定mousemove中文字的颜色？我想避免使用Richtextbox.Select，因为它会在鼠标移动的任何地方添加一个小选区。

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

您可以尝试使用此MSDN Forum answer of JoOls修改此类内容，它会为您提供鼠标下像素的颜色。

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;
    }
}

Answer 2

只是在黑暗中拍摄，但下面会有效吗？

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

我认为这只会检查选定的文字：

    private void rtbComputerstatus_MouseMove(object sender, MouseEventArgs e)
    {

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

    }

Richtextbox mousemove事件文本的颜色是什么

2 个答案: