DataGridView绘制错误
本文关键字:错误 绘制 DataGridView | 更新日期: 2023-09-27 17:54:06
我有一个表单,它有其他控件的色调(按钮,自定义控件,标签,面板,gridview)。你可以猜到我有闪烁的问题。我试过双重缓冲,但解决不了。最后我试了这个:
protected override CreateParams CreateParams
{
get
{
// Activate double buffering at the form level. All child controls will be double buffered as well.
CreateParams cp = base.CreateParams;
cp.ExStyle |= 0x02000000; // WS_EX_COMPOSITED
return cp;
}
}
闪烁消失,但我的datagridview绘制错误。它显示CellBorders, BorderColors错误。实际上,这段代码在背景图像、行和其他东西上有一些问题。为什么会这样?怎样才能解决这个问题?
我知道这个问题有点老了,但是迟做总比不做好。
这是一个解决方法,当用户调整窗体大小时停止闪烁,但不会搞乱控件的绘制,如DataGridView。如果您的表单名称为"Form1":
int intOriginalExStyle = -1;
bool bEnableAntiFlicker = true;
public Form1()
{
ToggleAntiFlicker(false);
InitializeComponent();
this.ResizeBegin += new EventHandler(Form1_ResizeBegin);
this.ResizeEnd += new EventHandler(Form1_ResizeEnd);
}
protected override CreateParams CreateParams
{
get
{
if (intOriginalExStyle == -1)
{
intOriginalExStyle = base.CreateParams.ExStyle;
}
CreateParams cp = base.CreateParams;
if (bEnableAntiFlicker)
{
cp.ExStyle |= 0x02000000; //WS_EX_COMPOSITED
}
else
{
cp.ExStyle = intOriginalExStyle;
}
return cp;
}
}
private void Form1_ResizeBegin(object sender, EventArgs e)
{
ToggleAntiFlicker(true);
}
private void Form1_ResizeEnd(object sender, EventArgs e)
{
ToggleAntiFlicker(false);
}
private void ToggleAntiFlicker(bool Enable)
{
bEnableAntiFlicker = Enable;
//hacky, but works
this.MaximizeBox = true;
}
我发现,如果我的应用程序在Windows XP或Windows Server 2003下运行,那么可以添加一个额外的标志来平滑地调整大小并显示我的网格线:
protected override CreateParams CreateParams
{
get
{
CreateParams cp = base.CreateParams;
cp.ExStyle |= 0x02000000; // Turn on WS_EX_COMPOSITED
if (this.IsXpOr2003 == true)
cp.ExStyle |= 0x00080000; // Turn on WS_EX_LAYERED
return cp;
}
}
private Boolean IsXpOr2003
{
get
{
OperatingSystem os = Environment.OSVersion;
Version vs = os.Version;
if (os.Platform == PlatformID.Win32NT)
if ((vs.Major == 5) && (vs.Minor != 0))
return true;
else
return false;
else
return false;
}
}