+// ----------------------------------------------------------------------------
+// Style handling
+// ----------------------------------------------------------------------------
+
+void wxWindowMSW::SetWindowStyleFlag(long flags)
+{
+ long flagsOld = GetWindowStyleFlag();
+ if ( flags == flagsOld )
+ return;
+
+ // update the internal variable
+ wxWindowBase::SetWindowStyleFlag(flags);
+
+ // now update the Windows style as well if needed - and if the window had
+ // been already created
+ if ( !GetHwnd() )
+ return;
+
+ WXDWORD exstyle, exstyleOld;
+ long style = MSWGetStyle(flags, &exstyle),
+ styleOld = MSWGetStyle(flagsOld, &exstyleOld);
+
+ if ( style != styleOld )
+ {
+ // some flags (e.g. WS_VISIBLE or WS_DISABLED) should not be changed by
+ // this function so instead of simply setting the style to the new
+ // value we clear the bits which were set in styleOld but are set in
+ // the new one and set the ones which were not set before
+ long styleReal = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+ styleReal &= ~styleOld;
+ styleReal |= style;
+
+ ::SetWindowLong(GetHwnd(), GWL_STYLE, styleReal);
+ }
+
+ // and the extended style
+ if ( exstyle != exstyleOld )
+ {
+ long exstyleReal = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
+ exstyleReal &= ~exstyleOld;
+ exstyleReal |= exstyle;
+
+ ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyleReal);
+
+ // we must call SetWindowPos() to flash the cached extended style and
+ // also to make the change to wxSTAY_ON_TOP style take effect: just
+ // setting the style simply doesn't work
+ if ( !::SetWindowPos(GetHwnd(),
+ exstyleReal & WS_EX_TOPMOST ? HWND_TOPMOST
+ : HWND_NOTOPMOST,
+ 0, 0, 0, 0,
+ SWP_NOMOVE | SWP_NOSIZE) )
+ {
+ wxLogLastError(_T("SetWindowPos"));
+ }
+ }
+}
+
+WXDWORD wxWindowMSW::MSWGetStyle(long flags, WXDWORD *exstyle) const
+{
+ // translate the style
+ WXDWORD style = WS_CHILD;
+
+ if ( flags & wxCLIP_CHILDREN )
+ style |= WS_CLIPCHILDREN;
+
+ if ( flags & wxCLIP_SIBLINGS )
+ style |= WS_CLIPSIBLINGS;
+
+ wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
+ if ( border != wxBORDER_NONE && border != wxBORDER_DEFAULT )
+ style |= WS_BORDER;
+
+ // now deal with ext style if the caller wants it
+ if ( exstyle )
+ {
+ *exstyle = 0;
+
+ if ( flags & wxTRANSPARENT_WINDOW )
+ *exstyle |= WS_EX_TRANSPARENT;
+
+ switch ( flags & wxBORDER_MASK )
+ {
+ default:
+ wxFAIL_MSG( _T("unknown border style") );
+ // fall through
+
+ case wxBORDER_NONE:
+ case wxBORDER_SIMPLE:
+ case wxBORDER_DEFAULT:
+ break;
+
+ case wxBORDER_STATIC:
+ *exstyle |= WS_EX_STATICEDGE;
+ break;
+
+ case wxBORDER_RAISED:
+ *exstyle |= WS_EX_WINDOWEDGE;
+ break;
+
+ case wxBORDER_SUNKEN:
+ *exstyle |= WS_EX_CLIENTEDGE;
+ break;
+
+ case wxBORDER_DOUBLE:
+ *exstyle |= WS_EX_DLGMODALFRAME;
+ break;
+ }
+
+ // to make the dialog navigation work with the nested panels we must
+ // use this style but, unfortunately, it hangs NT4 in some situations
+ // so we shouldn't use it -- even though it means that keyboard accels
+ // in, e.g. wxWizard, don't work
+#if 0
+ if ( flags & wxTAB_TRAVERSAL )
+ {
+ *exstyle |= WS_EX_CONTROLPARENT;
+ }
+#endif // 0
+ }
+
+ return style;
+}
projects / wxWidgets.git / blobdiff