setting border for pocket pc controls

  • Thread starter Thread starter joannethompson
  • Start date Start date
J

joannethompson

Is there a way to set the border for a tabpage or panel? I've added
them to a form but
do not see a property for setting the border style.
 
You'll need to modify the border yourself. You could custom paint the border
or you could use the code below. This code works for the Panel control, and
since the TabPage control inherits from Panel, this works for the TabPage
control as well.

using System.Runtime.InteropServices;

....

[DllImport("Coredll")]
private static extern IntPtr GetCapture();
[DllImport("Coredll")]
private static extern int GetWindowLong(IntPtr hWnd, int offset);
[DllImport("Coredll")]
private static extern int SetWindowLong(IntPtr hWnd, int offset, int value);
[DllImport("Coredll")]
private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter,
int x, int y, int width, int height, int flags);

private const int GWL_STYLE = -16;
private const int GWL_EXSTYLE = -20;

private const int SWP_NOSIZE = 0x0001;
private const int SWP_NOMOVE = 0x0002;
private const int SWP_NOZORDER = 0x0004;
private const int SWP_NOACTIVATE = 0x0010;
private const int SWP_FRAMECHANGED = 0x0020;

private const int WS_BORDER = 0x00800000;
private const int WS_EX_CLIENTEDGE = 0x00000200;

private void UpdateBorderStyle(Control ctrl, BorderStyle style)
{
IntPtr hWnd;
int styleValue;
int exStyleValue;

ctrl.Capture = true;
hWnd = GetCapture();
ctrl.Capture = false;

// Get the style, and extended style, information for the control.
styleValue = GetWindowLong(hWnd, GWL_STYLE);
exStyleValue = GetWindowLong(hWnd, GWL_EXSTYLE);

// Determine the new window styles based on the specified value.
switch (style)
{
case System.Windows.Forms.BorderStyle.None:
{
// Indicate that the border should be removed.
styleValue &= (~WS_BORDER);
exStyleValue &= (~WS_EX_CLIENTEDGE);
break;
}
case System.Windows.Forms.BorderStyle.FixedSingle:
{
// Indicate that the border should be a thin line.
styleValue |= (WS_BORDER);
exStyleValue &= (~WS_EX_CLIENTEDGE);
break;
}
case System.Windows.Forms.BorderStyle.Fixed3D:
{
// Indicate that the border should have a 3D appearance.
styleValue &= (~WS_BORDER);
exStyleValue |= (WS_EX_CLIENTEDGE);
break;
}
}

// Update the window styles for the control.
SetWindowLong(hWnd, GWL_STYLE, styleValue);
SetWindowLong(hWnd, GWL_EXSTYLE, exStyleValue);

// Refresh the window to ensure that the style change has been updated
properly.
SetWindowPos(hWnd, IntPtr.Zero, 0, 0, 0, 0, (SWP_FRAMECHANGED |
SWP_NOZORDER | SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE));
}

And you can update the border style for a control in the following way.

UpdateBorderStyle(this.panel1, BorderStyle.FixedSingle);
 
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