protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case NativeWindowCommon.WM_VSCROLL:
case NativeWindowCommon.WM_HSCROLL:
//keep all FitToMDI children at location 0,0 even after scroll
foreach (var item in mdiClient.MdiChildren)
{
TagData tagData = item.Tag as TagData;
if (tagData != null && (tagData.WindowType == WindowType.FitToMdi || tagData.IsMDIClientForm))
{
item.Location = new Point();
}
}
mdiClient.Invalidate();
break;
case NativeWindowCommon.WM_PAINT:
using (Graphics gr = Graphics.FromHwnd(mdiClient.Handle))
{
//Paint the mdiClient its children, background image, border etc.
ControlRenderer.PaintMgPanel(mdiClient, gr);
NativeWindowCommon.ValidateRect(mdiClient.Handle, IntPtr.Zero);
}
return;
default:
break;
}
base.WndProc(ref m);
}
/// <summary></summary>
/// <param name="e"></param>
protected override void OnPaint(PaintEventArgs e)
{
//base paint should always be called -- even if IsBasePaint is false
//because the borders should always be painted by the framework.
String orgText = Text;
TextToDisplay = Text;
base.Text = String.Empty;
base.OnPaint(e);
base.Text = orgText;
//Since we are modifying the Text, we need to Validate the Rect. Otherwise, the paint goes in recursion.
NativeWindowCommon.ValidateRect(this.Handle, IntPtr.Zero);
//fixedbug #:735118: when the button is UseVisualStyleBackColor=true(no color is set) and it is normal button
// let window to paint the backgound of the control.
// QCR #997321: if the button has gradient style then we should paint the background.
bool paintBackground = !UseVisualStyleBackColor || (GradientStyle != GradientStyle.None);
ButtonRenderer.DrawButton(this, e, paintBackground, true);
}
