Hi Stoitcho,

Thank you again for your explanations. Sorry for my misunderstandings of
components and controls.
Now i have to explain a little bit more of my project and what i've already
tested:
The width of the columns in the ListView is fixed and the user is not
allowed to resize the column width neither with a mouse drag nor with a
double click. I've got a tip from Claes Bergefall to catch these events.
But the mouse cursor changes to "ve_sizeb.cur". If you see this cursor you
think you can resize the column width.
Now i wanted to catch the mouse move event before the mouse cursor changes
to "ve_sizeb.cur". My first guess was to use the mouse move event of the
ListView. But there is no mouse move event when you move the mouse over the
column header.

Here is my MouseMove event:
protected override void OnMouseMove(MouseEventArgs e)
{
 // store the mouse position in the HitTestInfo structure
 HDHITTESTINFO mPoint = new HDHITTESTINFO();
 mPoint.pt.X = e.X;
 mPoint.pt.Y = e.Y;

 // get the position of the mouse in the listview header.
 // The header control includes all columns.
 // Get a handle to the header control.
 IntPtr hc;
 hc = SendMessage(this.Handle, new IntPtr(LVM_GETHEADER), new IntPtr(0),
new IntPtr(0));
 hc = SendMessage(hc, new IntPtr(HDM_HITTEST), new IntPtr(0), ref mPoint);
 if (mPoint.flags != HHT_ONDIVIDER)
   base.OnMouseMove (e);
}

There is never a flag with HHT_ONDIVIDER, all flags i get are HHT_BELOW.
There is no y-position of the mouse smaller than 18 (the height of the
ColumnHeader). Now i think there is a control catching the mouse move event
in the area of the column headers.
Is there any way to prevent the mouse cursor to change to the resizign cursor?

Thank you,
Georg

"Stoitcho Goutsev (100) [C# MVP]" wrote: