Some improvements to accessibility behaviour

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

diff --git a/src/msw/dialog.cpp b/src/msw/dialog.cpp
index 90ed1c507f4343236964e3e9e7cc02561325dffd..214bfb1dd4cb19a6e9c9438c2f84f8fcb11c371f 100644 (file)
--- a/src/msw/dialog.cpp
+++ b/src/msw/dialog.cpp
@@ -194,6 +194,28 @@ bool wxDialog::IsModalShowing() const
     return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
 }
 
+wxWindow *wxDialog::FindSuitableParent() const
+{
+    // first try to use the currently active window
+    HWND hwndFg = ::GetForegroundWindow();
+    wxWindow *parent = hwndFg ? wxFindWinFromHandle((WXHWND)hwndFg)
+                              : NULL;
+    if ( !parent )
+    {
+        // next try the main app window
+        parent = wxTheApp->GetTopWindow();
+    }
+
+    // finally, check if the parent we found is really suitable
+    if ( !parent || parent == (wxWindow *)this || !parent->IsShown() )
+    {
+        // don't use this one
+        parent = NULL;
+    }
+
+    return parent;
+}
+
 void wxDialog::DoShowModal()
 {
     wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
@@ -225,6 +247,12 @@ void wxDialog::DoShowModal()
 
     m_windowDisabler = new wxWindowDisabler(this);
 
+    // before entering the modal loop, reset the "is in OnIdle()" flag (see
+    // comment in app.cpp)
+    extern bool wxIsInOnIdleFlag;
+    bool wasInOnIdle = wxIsInOnIdleFlag;
+    wxIsInOnIdleFlag = FALSE;
+
     // enter the modal loop
     while ( IsModalShowing() )
     {
@@ -239,6 +267,8 @@ void wxDialog::DoShowModal()
         wxTheApp->DoMessage();
     }
 
+    wxIsInOnIdleFlag = wasInOnIdle;
+
     // and restore focus
     // Note that this code MUST NOT access the dialog object's data
     // in case the object has been deleted (which will be the case
@@ -274,6 +304,14 @@ bool wxDialog::Show(bool show)
 
     if ( show )
     {
+        // dialogs don't get WM_SIZE message after creation unlike most (all?)
+        // other windows and so could start their life non laid out correctly
+        // if we didn't call Layout() from here
+        //
+        // NB: normally we should call it just the first time but doing it
+        //     every time is simpler than keeping a flag
+        Layout();
+
         // usually will result in TransferDataToWindow() being called
         InitDialog();
     }
@@ -285,12 +323,7 @@ bool wxDialog::Show(bool show)
             // modal dialog needs a parent window, so try to find one
             if ( !GetParent() )
             {
-                wxWindow *parent = wxTheApp->GetTopWindow();
-                if ( parent && parent != this && parent->IsShown() )
-                {
-                    // use it
-                    m_parent = parent;
-                }
+                m_parent = FindSuitableParent();
             }
 
             DoShowModal();
@@ -398,14 +431,6 @@ void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 // dialog window proc
 // ---------------------------------------------------------------------------
 
-BOOL CALLBACK wxRefreshChildProc(HWND hwnd, LPARAM WXUNUSED(lParam))
-{
-    ::InvalidateRect(hwnd, NULL, FALSE /* don't erase bg */);
-
-    // continue enumeration
-    return TRUE;
-}
-
 long wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 {
     long rc = 0;
@@ -430,7 +455,7 @@ long wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
             processed = TRUE;
             if ( !HasFlag(wxNO_FULL_REPAINT_ON_RESIZE) )
             {
-                ::EnumChildWindows(GetHwnd(), wxRefreshChildProc, 0);
+                ::InvalidateRect(GetHwnd(), NULL, FALSE /* erase bg */);
             }
             break;