protected override void WndProc(ref Message m)
{
try
{
switch (m.Msg)
{
case WM.WM_PAINT:
if (!_bPainting)
{
PAINTSTRUCT ps = new PAINTSTRUCT();
_bPainting = true;
NativeMethods.BeginPaint(m.HWnd, ref ps);
DrawScrollBar(m.HWnd, _maskControl.Handle);
NativeMethods.ValidateRect(m.HWnd, ref ps.rcPaint);
NativeMethods.EndPaint(m.HWnd, ref ps);
_bPainting = false;
m.Result = Result.TRUE;
}
else
{
base.WndProc(ref m);
}
break;
case SBM.SBM_SETSCROLLINFO:
DrawScrollBar(m.HWnd, _maskControl.Handle, true, false);
base.WndProc(ref m);
break;
case WM.WM_STYLECHANGED:
DrawScrollBar(m.HWnd, _maskControl.Handle, false, true);
base.WndProc(ref m);
break;
case WM.WM_LBUTTONDOWN:
_lastMouseDownHistTest = ScrollBarHitTest(m.HWnd);
DrawScrollBar(m.HWnd, _maskControl.Handle);
base.WndProc(ref m);
break;
case WM.WM_LBUTTONUP:
case WM.WM_MOUSEMOVE:
DrawScrollBar(m.HWnd, _maskControl.Handle);
base.WndProc(ref m);
break;
case WM.WM_MOUSELEAVE:
DrawScrollBar(m.HWnd, _maskControl.Handle);
base.WndProc(ref m);
break;
case WM.WM_WINDOWPOSCHANGED:
WINDOWPOS pos = (WINDOWPOS)Marshal.PtrToStructure(
m.LParam, typeof(WINDOWPOS));
bool hide = (pos.flags & SWP.SWP_HIDEWINDOW) != 0;
bool show = (pos.flags & SWP.SWP_SHOWWINDOW) != 0;
if (hide)
{
_maskControl.SetVisibale(false);
}
else if (show)
{
_maskControl.SetVisibale(true);
}
_maskControl.CheckBounds(m.HWnd);
base.WndProc(ref m);
break;
default:
base.WndProc(ref m);
break;
}
}
catch
{
}
}
public static extern IntPtr BeginPaint(
IntPtr hWnd, ref PAINTSTRUCT ps);
public static extern bool EndPaint(
IntPtr hWnd, ref PAINTSTRUCT ps);
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case WM.WM_PAINT:
if (!_bPainting)
{
_bPainting = true;
PAINTSTRUCT ps = new PAINTSTRUCT();
NativeMethods.BeginPaint(m.HWnd, ref ps);
try
{
DrawProgressBar(m.HWnd);
}
catch
{
}
NativeMethods.ValidateRect(m.HWnd, ref ps.rcPaint);
NativeMethods.EndPaint(m.HWnd, ref ps);
_bPainting = false;
m.Result = Result.TRUE;
}
else
{
base.WndProc(ref m);
}
break;
default:
base.WndProc(ref m);
break;
}
}