private void OnCustomDraw(ref NMTBCUSTOMDRAW customDraw, ref Message m)
{
if (customDraw.hdr.dwDrawStage == Win32Declarations.CDDS_PREPAINT)
{
using (Graphics g = Graphics.FromHdc(customDraw.hdr.hdc))
{
Rectangle rect = Win32Declarations.RECTToRectangle(customDraw.hdr.rc);
g.FillRectangle(_backBrush, rect);
if (PaintBackground != null)
{
PaintBackground(this, new PaintEventArgs(g, rect));
}
}
m.Result = (IntPtr)Win32Declarations.CDRF_DODEFAULT;
}
}
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
try
{
if (m.Msg == Win32Declarations.OCM_NOTIFY)
{
NMHDR hdr = (NMHDR)Marshal.PtrToStructure(m.LParam, typeof(NMHDR));
if (hdr.hwndFrom == Handle)
{
if (hdr.code == Win32Declarations.NM_CUSTOMDRAW)
{
NMTBCUSTOMDRAW customDraw = (NMTBCUSTOMDRAW)Marshal.PtrToStructure(m.LParam, typeof(NMTBCUSTOMDRAW));
OnCustomDraw(ref customDraw, ref m);
}
}
}
}
catch (Exception ex)
{
Core.ReportBackgroundException(ex);
}
}