问题
In Windows 7, the volume mixer windows has a specific style, with a thick, transparent border, but no title bar. How do i recreate that window style in a winforms window?
![](https://www.eimg.top/images/2020/02/27/588fa0a71a955d8cf502906e269f6a25.png)
I tried setting Text to string.Empty, and ControlBox to false, which removes the titlebar, but then the border also disappears:
![](https://www.eimg.top/images/2020/02/27/502484d363d3c9f3d5b791895a3f8dfe.png)
回答1:
form.Text = string.Empty;
form.ControlBox = false;
form.FormBorderStyle = FormBorderStyle.SizableToolWindow;
For a fixed size window, you should still use FormBorderStyle.SizableToolWindow
, but you can override the form's WndProc
to ignore non-client hit tests (which are used to switch to the sizing cursors):
protected override void WndProc(ref Message message)
{
const int WM_NCHITTEST = 0x0084;
if (message.Msg == WM_NCHITTEST)
return;
base.WndProc(ref message);
}
If you want to really enforce the size, you could also set MinimumSize
equal to MaximumSize
on the form.
回答2:
Since "This edit was intended to address the author of the post and makes no sense as an edit. It should have been written as a comment or an answer." I present an edit to Chris' answer as a new answer.
The code his answer works as described - except that it also prevents any client area mouse event to occur. You need to return 1 (as in HTCLIENT) to fix that.
protected override void WndProc(ref Message message)
{
const int WM_NCHITTEST = 0x0084;
const int HTCLIENT = 0x01;
if (message.Msg == WM_NCHITTEST)
{
message.Result = new IntPtr(HTCLIENT);
return;
}
base.WndProc(ref message);
}
回答3:
form.FormBorderStyle = FormBorderStyle.Fixed3D;
来源:https://stackoverflow.com/questions/3594086/how-to-create-a-form-with-a-border-but-no-title-bar-like-volume-control-on-wi