-WXHBRUSH wxStaticBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
- WXUINT message,
- WXWPARAM wParam,
- WXLPARAM lParam)
-{
-#if wxUSE_CTL3D
- if ( m_useCtl3D )
- {
- HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
- return (WXHBRUSH) hbrush;
- }
-#endif // wxUSE_CTL3D
-
- HDC hdc = (HDC)pDC;
- if (GetParent()->GetTransparentBackground())
- SetBkMode(hdc, TRANSPARENT);
- else
- SetBkMode(hdc, OPAQUE);
-
- const wxColour& colBack = GetBackgroundColour();
- ::SetBkColor(hdc, wxColourToRGB(colBack));
- ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
-
- wxBrush *brush= wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
-
- return (WXHBRUSH)brush->GetResourceHandle();
-}
-
-// VZ: this is probably the most commented function in wxWindows, but I still
-// don't understand what it does and why. Wouldn't it be better to _never_
-// erase the background here? What would we lose if we didn't do it?
-// (FIXME)
-
-// Shouldn't erase the whole window, since the static box must only paint its
-// outline.
-void wxStaticBox::OnEraseBackground(wxEraseEvent& event)
-{
- // If we don't have this (call Default()), we don't paint the background properly.
- // If we do have this, we seem to overwrite enclosed controls.
- // Is it the WS_CLIPCHILDREN style that's causing the problems?
- // Probably - without this style, the background of the window will show through,
- // so the control doesn't have to paint it. The window background will always be
- // painted before all other controls, therefore there are no problems with
- // controls being hidden by the static box.
- // So, if we could specify wxCLIP_CHILDREN in window, or not, we could optimise painting better.
- // We would assume wxCLIP_CHILDREN in a frame and a scrolled window, but not in a panel.
- // Is this too platform-specific?? What else can we do? Not a lot, since we have to pass
- // this information from arbitrary wxWindow derivatives, and it depends on what you wish to
- // do with the windows.
- // Alternatively, just make sure that wxStaticBox is always at the back! There are probably
- // few other circumstances where it matters about child clipping. But what about painting onto
- // to panel, inside a groupbox? Doesn't appear, because the box wipes it out.
- wxWindow *parent = GetParent();
- if ( parent && parent->GetHWND() &&
- (::GetWindowLong(GetHwndOf(parent), GWL_STYLE) & WS_CLIPCHILDREN) )
- {
- // TODO: May in fact need to generate a paint event for inside this
- // control's rectangle, otherwise all controls are going to be clipped -
- // ugh.
-
- // let wxControl::OnEraseBackground() do the job
- event.Skip();
- }
- //else: do *not* call event.Skip() or wxControl will erase the background
-}
-