列表框手动DRAWITEM大字体大小 [英] Listbox manual DrawItem big font size
问题描述
我想画的项目,他们到底是一个 *
红色字符(并删除 *
字符)并绘制在黑色的其他项目
I'm trying to draw items that end of them is an *
character in red (and remove that *
character) and draw other items in black color.
这是我的代码:
private void listBox1_DrawItem(object sender, DrawItemEventArgs e)
{
e.DrawBackground() ; //Draw our regular background
if (Microsoft.VisualBasic.Strings.Right(listBox1.Items[e.Index].ToString(), 1) == "*")
{
e.Graphics.DrawString(Microsoft.VisualBasic.Strings.Mid(listBox1.Items[e.Index].ToString(),1,listBox1.Items[e.Index].ToString().Length - 1), e.Font, Brushes.Red, e.Bounds); //Draw the item text in red!
}
else
{
e.Graphics.DrawString(listBox1.Items[e.Index].ToString(), e.Font, Brushes.Black, e.Bounds); //Draw the item text in its regular color
}
}
另外 DrawMode
列表框的属性设置为 OwnerDrawVariable
。
Also DrawMode
property of the listbox is set to OwnerDrawVariable
.
我的代码工作正常时,列表框的字体是默认字体。
My code is working fine when the font of listbox is the default font.
但是,当我改变从8.25(默认大小),字体大小为14,一半文本借鉴了列表框。像这样:
But When I change the font size from 8.25 (default size) to 14, half of the text draws on the listbox. like this:
但随着默认字体大小,一切是正确的。
But with default font size, everything is correct.
这是什么问题?
推荐答案
您必须处理的 MeasureItem 事件,并设置项目有高度:
You have to handle the MeasureItem event and set the height of the items there:
private void listBox1_MeasureItem(object sender, MeasureItemEventArgs e)
{
e.ItemHeight = listBox1.Font.Height;
}
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