private void WmPaint(ref Message m)
{
if (base.DropDownStyle == ComboBoxStyle.Simple)
{
base.WndProc(ref m);
return;
}
else//if (base.DropDownStyle == ComboBoxStyle.DropDown)
{
if (!_bPainting)
{
PAINTSTRUCT ps =
new PAINTSTRUCT();
_bPainting = true;
WinMethod.BeginPaint(m.HWnd, ref ps);
RenderComboBox(ref m);
WinMethod.EndPaint(m.HWnd, ref ps);
_bPainting = false;
m.Result = KnownParam.TRUE;
}
else
{
base.WndProc(ref m);
}
}
//else
//{
// base.WndProc(ref m);
// RenderComboBox(ref m);
//}
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case WinMsgs.WM_PAINT:
if (!_bPainting)
{
PAINTSTRUCT ps =
new PAINTSTRUCT();
_bPainting = true;
WinMethod.BeginPaint(m.HWnd, ref ps);
DrawUpDownButton();
WinMethod.EndPaint(m.HWnd, ref ps);
_bPainting = false;
m.Result = KnownParam.TRUE;
}
else
{
base.WndProc(ref m);
}
break;
default:
base.WndProc(ref m);
break;
}
}
public static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
public static extern IntPtr BeginPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
private void WmPaint(ref Message m)
{
if (base.DropDownStyle == ComboBoxStyle.Simple)
{
base.WndProc(ref m);
return;
}
else//if (base.DropDownStyle == ComboBoxStyle.DropDown)
{
if (!_bPainting)
{
PAINTSTRUCT ps =
new PAINTSTRUCT();
_bPainting = true;
WinMethod.BeginPaint(m.HWnd, ref ps);
RenderComboBox(ref m);
WinMethod.EndPaint(m.HWnd, ref ps);
_bPainting = false;
m.Result = KnownParam.TRUE;
}
else
{
base.WndProc(ref m);
}
}
//else
//{
// base.WndProc(ref m);
// RenderComboBox(ref m);
//}
}
public static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT ps);
public static extern IntPtr BeginPaint(IntPtr hWnd, ref PAINTSTRUCT ps);