C# 在RichTextBox中滾動鼠標時滾動的是父窗口的滾動條
阿新 • • 發佈:2017-08-03
下載 pan private http text ole console ping 滾動 Console.WriteLine(panel1.VerticalScroll.Value);
if (size <= _size)
{
int delta = 120;
int value = 0;
if (e.Delta > 0)
{
value= Math.Max(panel1.VerticalScroll.Minimum, panel1.VerticalScroll.Value - delta);
}
else
{
value = Math.Min(panel1.VerticalScroll.Maximum, panel1.VerticalScroll.Value + delta);
}
panel1.VerticalScroll.Value = value;
panel1.VerticalScroll.Value = value;
}
}
1. RichTextBox u2 = new RichTextBox();
2. 先記住日RichTextBox沒有顯示滾動條時的總寬度和顯示寬度
u2.Width - u2.ClientSize.Width。
3. 當顯示垂直滾動條時,顯示寬度會變化。
當RichTextBox沒有顯示垂直滾動條時,在RichTextBox中滾動鼠標時,滾動的是父窗口的滾動條。
private void U2_MouseWheel(object sender, MouseEventArgs e)
{
int size = u2.Width - u2.ClientSize.Width;
if (size <= _size)
{
int delta = 120;
int value = 0;
if (e.Delta > 0)
{
value= Math.Max(panel1.VerticalScroll.Minimum, panel1.VerticalScroll.Value - delta);
else
{
value = Math.Min(panel1.VerticalScroll.Maximum, panel1.VerticalScroll.Value + delta);
}
panel1.VerticalScroll.Value = value;
panel1.VerticalScroll.Value = value;
}
}
這裏貼出主要代碼,demo下載路徑:
http://download.csdn.net/detail/nkhuangyanping/9846939
C# 在RichTextBox中滾動鼠標時滾動的是父窗口的滾動條