fix off by 1 error in GetTextRaw() (#4317)

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

diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index 87a4f1260194833b6bf777a9ac4f9f57103fcf58..1101fb474c0ad915f414d147009a6ad5598a9a00 100644 (file)
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -716,14 +716,23 @@ bool wxWindowMSW::Show(bool show)
         ::ShowWindow(hWnd, show ? SW_SHOW : SW_HIDE);
     }
 
+    if ( IsFrozen() )
+    {
+        // DoFreeze/DoThaw don't do anything if the window is not shown, so
+        // we have to call them from here now
+        if ( show )
+            DoFreeze();
+        else
+            DoThaw();
+    }
+
     return true;
 }
 
 bool
 wxWindowMSW::MSWShowWithEffect(bool show,
                                wxShowEffect effect,
-                               unsigned timeout,
-                               wxDirection dir)
+                               unsigned timeout)
 {
     if ( !wxWindowBase::Show(show) )
         return false;
@@ -752,16 +761,39 @@ wxWindowMSW::MSWShowWithEffect(bool show,
         timeout = 200; // this is the default animation timeout, per MSDN
 
     DWORD dwFlags = show ? 0 : AW_HIDE;
-    bool needsDir = false;
+
     switch ( effect )
     {
-        case wxSHOW_EFFECT_ROLL:
-            needsDir = true;
+        case wxSHOW_EFFECT_ROLL_TO_LEFT:
+            dwFlags |= AW_HOR_NEGATIVE;
+            break;
+
+        case wxSHOW_EFFECT_ROLL_TO_RIGHT:
+            dwFlags |= AW_HOR_POSITIVE;
+            break;
+
+        case wxSHOW_EFFECT_ROLL_TO_TOP:
+            dwFlags |= AW_VER_NEGATIVE;
+            break;
+
+        case wxSHOW_EFFECT_ROLL_TO_BOTTOM:
+            dwFlags |= AW_VER_POSITIVE;
+            break;
+
+        case wxSHOW_EFFECT_SLIDE_TO_LEFT:
+            dwFlags |= AW_SLIDE | AW_HOR_NEGATIVE;
             break;
 
-        case wxSHOW_EFFECT_SLIDE:
-            needsDir = true;
-            dwFlags |= AW_SLIDE;
+        case wxSHOW_EFFECT_SLIDE_TO_RIGHT:
+            dwFlags |= AW_SLIDE | AW_HOR_POSITIVE;
+            break;
+
+        case wxSHOW_EFFECT_SLIDE_TO_TOP:
+            dwFlags |= AW_SLIDE | AW_VER_NEGATIVE;
+            break;
+
+        case wxSHOW_EFFECT_SLIDE_TO_BOTTOM:
+            dwFlags |= AW_SLIDE | AW_VER_POSITIVE;
             break;
 
         case wxSHOW_EFFECT_BLEND:
@@ -782,38 +814,6 @@ wxWindowMSW::MSWShowWithEffect(bool show,
             return false;
     }
 
-    if ( needsDir )
-    {
-        switch ( dir )
-        {
-            case wxTOP:
-                dwFlags |= AW_VER_NEGATIVE;
-                break;
-
-            case wxBOTTOM:
-                dwFlags |= AW_VER_POSITIVE;
-                break;
-
-            case wxLEFT:
-                dwFlags |= AW_HOR_NEGATIVE;
-                break;
-
-            case wxRIGHT:
-                dwFlags |= AW_HOR_POSITIVE;
-                break;
-
-            default:
-                wxFAIL_MSG( _T("unknown window effect direction") );
-                return false;
-        }
-    }
-    else // animation effect which doesn't need the direction
-    {
-        wxASSERT_MSG( dir == wxBOTTOM,
-                        _T("non-default direction used unnecessarily") );
-    }
-
-
     if ( !(*s_pfnAnimateWindow)(GetHwnd(), timeout, dwFlags) )
     {
         wxLogLastError(_T("AnimateWindow"));
@@ -1615,20 +1615,22 @@ static inline void SendSetRedraw(HWND hwnd, bool on)
 
 void wxWindowMSW::DoFreeze()
 {
-    if ( IsShown() )
-        SendSetRedraw(GetHwnd(), false);
+    if ( !IsShown() )
+        return; // no point in freezing hidden window
+
+    SendSetRedraw(GetHwnd(), false);
 }
 
 void wxWindowMSW::DoThaw()
 {
-    if ( IsShown() )
-    {
-        SendSetRedraw(GetHwnd(), true);
+    if ( !IsShown() )
+        return; // hidden windows aren't frozen by DoFreeze
 
-        // we need to refresh everything or otherwise the invalidated area
-        // is not going to be repainted
-        Refresh();
-    }
+    SendSetRedraw(GetHwnd(), true);
+
+    // we need to refresh everything or otherwise the invalidated area
+    // is not going to be repainted
+    Refresh();
 }
 
 void wxWindowMSW::Refresh(bool eraseBack, const wxRect *rect)
@@ -3667,6 +3669,12 @@ bool wxWindowMSW::MSWCreate(const wxChar *wclass,
                             WXDWORD style,
                             WXDWORD extendedStyle)
 {
+    // check a common bug in the user code: if the window is created with a
+    // non-default ctor and Create() is called too, we'd create 2 HWND for a
+    // single wxWindow object and this results in all sorts of trouble,
+    // especially for wxTLWs
+    wxCHECK_MSG( !m_hWnd, true, "window can't be recreated" );
+
     // choose the position/size for the new window
     int x, y, w, h;
     (void)MSWGetCreateWindowCoords(pos, size, x, y, w, h);
@@ -3906,7 +3914,7 @@ bool wxWindowMSW::HandleEndSession(bool endSession, long logOff)
     wxCloseEvent event(wxEVT_END_SESSION, wxID_ANY);
     event.SetEventObject(wxTheApp);
     event.SetCanVeto(false);
-    event.SetLoggingOff( (logOff == (long)ENDSESSION_LOGOFF) );
+    event.SetLoggingOff((logOff & ENDSESSION_LOGOFF) != 0);
 
     return wxTheApp->ProcessEvent(event);
 #else
@@ -4249,17 +4257,32 @@ bool wxWindowMSW::HandlePower(WXWPARAM WXUNUSED_IN_WINCE(wParam),
 
 bool wxWindowMSW::IsDoubleBuffered() const
 {
-    for ( const wxWindowMSW *wnd = this;
-          wnd && !wnd->IsTopLevel(); wnd =
-          wnd->GetParent() )
-    {
-        if ( ::GetWindowLong(GetHwndOf(wnd), GWL_EXSTYLE) & WS_EX_COMPOSITED )
+    const wxWindowMSW *wnd = this;
+    do {
+        long style = ::GetWindowLong(GetHwndOf(wnd), GWL_EXSTYLE);
+        if ( (style & WS_EX_COMPOSITED) != 0 )
             return true;
-    }
-
+        wnd = wnd->GetParent();
+    } while ( wnd && !wnd->IsTopLevel() );
+        
     return false;
 }
 
+void wxWindowMSW::SetDoubleBuffered(bool on)
+{
+    // Get the current extended style bits
+    long exstyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
+
+    // Twiddle the bit as needed
+    if ( on )
+        exstyle |= WS_EX_COMPOSITED;
+    else
+        exstyle &= ~WS_EX_COMPOSITED;
+
+    // put it back
+    ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyle);
+}
+
 // ---------------------------------------------------------------------------
 // owner drawn stuff
 // ---------------------------------------------------------------------------