Patch [ 1816051 ] MSW DrawEllipticArc inconsistent with other platforms

[wxWidgets.git] / src / msw / button.cpp

diff --git a/src/msw/button.cpp b/src/msw/button.cpp
index 7ca213e4135b427b1698197a0d77c42c013f9d56..64e4790923f850f59a30868f7ac0d3e60240887a 100644 (file)
--- a/src/msw/button.cpp
+++ b/src/msw/button.cpp
@@ -161,16 +161,14 @@ bool wxButton::Create(wxWindow *parent,
     wxString label(lbl);
     if (label.empty() && wxIsStockID(id))
     {
-        // On Windows, some buttons aren't supposed to have
-        // mnemonics, so strip them out.
-
-        label = wxGetStockLabel(id
-#if defined(__WXMSW__) || defined(__WXWINCE__)
-                                        , ( id != wxID_OK &&
-                                            id != wxID_CANCEL &&
-                                            id != wxID_CLOSE )
-#endif
-                                );
+        // On Windows, some buttons aren't supposed to have mnemonics
+        label = wxGetStockLabel
+                (
+                    id,
+                    id == wxID_OK || id == wxID_CANCEL || id == wxID_CLOSE
+                        ? wxSTOCK_NOFLAGS
+                        : wxSTOCK_WITH_MNEMONIC
+                );
     }
 
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
@@ -179,19 +177,16 @@ bool wxButton::Create(wxWindow *parent,
     WXDWORD exstyle;
     WXDWORD msStyle = MSWGetStyle(style, &exstyle);
 
-#ifdef __WIN32__
     // if the label contains several lines we must explicitly tell the button
     // about it or it wouldn't draw it correctly ("\n"s would just appear as
     // black boxes)
     //
     // NB: we do it here and not in MSWGetStyle() because we need the label
-    //     value and m_label is not set yet when MSWGetStyle() is called;
-    //     besides changing BS_MULTILINE during run-time is pointless anyhow
+    //     value and the label is not set yet when MSWGetStyle() is called
     if ( label.find(_T('\n')) != wxString::npos )
     {
         msStyle |= BS_MULTILINE;
     }
-#endif // __WIN32__
 
     return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle);
 }
@@ -222,7 +217,6 @@ WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const
     // the bottom
     msStyle |= WS_CLIPSIBLINGS;
 
-#ifdef __WIN32__
     // don't use "else if" here: weird as it is, but you may combine wxBU_LEFT
     // and wxBU_RIGHT to get BS_CENTER!
     if ( style & wxBU_LEFT )
@@ -238,11 +232,29 @@ WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const
     if ( style & wxNO_BORDER )
         msStyle |= BS_FLAT;
 #endif // __WXWINCE__
-#endif // __WIN32__
 
     return msStyle;
 }
 
+void wxButton::SetLabel(const wxString& label)
+{
+    // update BS_MULTILINE style depending on the new label (resetting it
+    // doesn't seem to do anything very useful but it shouldn't hurt and we do
+    // have to set it whenever the label becomes multi line as otherwise it
+    // wouldn't be shown correctly)
+    long styleOld = ::GetWindowLong(GetHwnd(), GWL_STYLE),
+         styleNew;
+    if ( label.find(_T('\n')) != wxString::npos )
+        styleNew = styleOld | BS_MULTILINE;
+    else
+        styleNew = styleOld & ~BS_MULTILINE;
+
+    if ( styleNew != styleOld )
+        ::SetWindowLong(GetHwnd(), GWL_STYLE, styleNew);
+
+    wxButtonBase::SetLabel(label);
+}
+
 // ----------------------------------------------------------------------------
 // size management including autosizing
 // ----------------------------------------------------------------------------
@@ -351,14 +363,37 @@ wxWindow *wxButton::SetDefault()
     // ... and Windows
     SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
     SetDefaultStyle(this, true);
+
+    return winOldDefault;
+}
+
+// special version of wxGetTopLevelParent() which is safe to call when the
+// parent is being destroyed: wxGetTopLevelParent() would just return NULL in
+// this case because wxWindow version of IsTopLevel() is used when it's called
+// during window destruction instead of wxTLW one, but we want to distinguish
+// between these cases
+static wxTopLevelWindow *GetTLWParentIfNotBeingDeleted(wxWindow *win)
+{
+    for ( ; win; win = win->GetParent() )
+    {
+        if ( win->IsBeingDeleted() )
+            return NULL;
+
+        if ( win->IsTopLevel() )
+            break;
+    }
+
+    wxASSERT_MSG( win, _T("button without top level parent?") );
+
+    return wxDynamicCast(win, wxTopLevelWindow);
 }
 
 // set this button as being currently default
 void wxButton::SetTmpDefault()
 {
-    wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
-
-    wxCHECK_RET( tlw, _T("button without top level window?") );
+    wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent());
+    if ( !tlw )
+        return;
 
     wxWindow *winOldDefault = tlw->GetDefaultItem();
     tlw->SetTmpDefaultItem(this);
@@ -370,9 +405,9 @@ void wxButton::SetTmpDefault()
 // unset this button as currently default, it may still stay permanent default
 void wxButton::UnsetTmpDefault()
 {
-    wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
-
-    wxCHECK_RET( tlw, _T("button without top level window?") );
+    wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent());
+    if ( !tlw )
+        return;
 
     tlw->SetTmpDefaultItem(NULL);
 
@@ -530,8 +565,6 @@ WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 // owner-drawn buttons support
 // ----------------------------------------------------------------------------
 
-#ifdef __WIN32__
-
 // drawing helpers
 
 static void DrawButtonText(HDC hdc,
@@ -549,7 +582,8 @@ static void DrawButtonText(HDC hdc,
         // first we need to compute its bounding rect
         RECT rc;
         ::CopyRect(&rc, pRect);
-        ::DrawText(hdc, text, text.length(), &rc, DT_CENTER | DT_CALCRECT);
+        ::DrawText(hdc, text.wx_str(), text.length(), &rc,
+                   DT_CENTER | DT_CALCRECT);
 
         // now center this rect inside the entire button area
         const LONG w = rc.right - rc.left;
@@ -559,12 +593,12 @@ static void DrawButtonText(HDC hdc,
         rc.top = (pRect->bottom - pRect->top)/2 - h/2;
         rc.bottom = rc.top+h;
 
-        ::DrawText(hdc, text, text.length(), &rc, DT_CENTER);
+        ::DrawText(hdc, text.wx_str(), text.length(), &rc, DT_CENTER);
     }
     else // single line label
     {
         // Note: we must have DT_SINGLELINE for DT_VCENTER to work.
-        ::DrawText(hdc, text, text.length(), pRect,
+        ::DrawText(hdc, text.wx_str(), text.length(), pRect,
                    DT_SINGLELINE | DT_CENTER | DT_VCENTER);
     }
 
@@ -853,6 +887,4 @@ bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis)
     return true;
 }
 
-#endif // __WIN32__
-
 #endif // wxUSE_BUTTON