Allow creating wxGraphicsBitmap and wxGraphicsContext from wxImage.

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

diff --git a/src/msw/toplevel.cpp b/src/msw/toplevel.cpp
index 5b271f01a2699e5bdec3100a0945f4c47d3158cb..909d29bb87b68ad133c79196778721258b61e86d 100644 (file)
--- a/src/msw/toplevel.cpp
+++ b/src/msw/toplevel.cpp
@@ -33,6 +33,7 @@
     #include "wx/log.h"
     #include "wx/intl.h"
     #include "wx/frame.h"
+    #include "wx/menu.h"
     #include "wx/containr.h"        // wxSetFocusToChild()
     #include "wx/module.h"
 #endif //WX_PRECOMP
@@ -141,6 +142,8 @@ void wxTopLevelWindowMSW::Init()
 
     m_activateInfo = (void*) info;
 #endif
+
+    m_menuSystem = NULL;
 }
 
 WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const
@@ -326,9 +329,9 @@ WXLRESULT wxTopLevelWindowMSW::MSWWindowProc(WXUINT message, WXWPARAM wParam, WX
     WXLRESULT rc = 0;
     bool processed = false;
 
-#if defined(__SMARTPHONE__) || defined(__POCKETPC__)
     switch ( message )
     {
+#if defined(__SMARTPHONE__) || defined(__POCKETPC__)
         case WM_ACTIVATE:
         {
             SHACTIVATEINFO* info = (SHACTIVATEINFO*) m_activateInfo;
@@ -355,8 +358,37 @@ WXLRESULT wxTopLevelWindowMSW::MSWWindowProc(WXUINT message, WXWPARAM wParam, WX
             }
             break;
         }
+#endif // __SMARTPHONE__ || __POCKETPC__
+
+        case WM_SYSCOMMAND:
+        // Keep the #ifdef block inside the case to fix a potential MSVC
+        // warning regarding switch statement containing no case or
+        // default labels (or a default only).
+#ifndef __WXUNIVERSAL__
+            // We may need to generate events for the items added to the system
+            // menu if it had been created (and presumably modified).
+            if ( m_menuSystem )
+            {
+                // From MSDN:
+                //
+                //      ... the four low-order bits of the wParam parameter are
+                //      used internally by the system. To obtain the correct
+                //      result when testing the value of wParam, an application
+                //      must combine the value 0xFFF0 with the wParam value by
+                //      using the bitwise AND operator.
+                unsigned id = wParam & 0xfff0;
+
+                // SC_SIZE is the first of the system-defined commands and we
+                // leave those to DefWindowProc().
+                if ( id < SC_SIZE )
+                {
+                    if ( m_menuSystem->MSWCommand(0 /* unused anyhow */, id) )
+                        processed = true;
+                }
+            }
+#endif // #ifndef __WXUNIVERSAL__
+            break;
     }
-#endif
 
     if ( !processed )
         rc = wxTopLevelWindowBase::MSWWindowProc(message, wParam, lParam);
@@ -413,25 +445,26 @@ bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate,
     }
 #endif // !__WXWINCE__
 
+#if !defined(__WXWINCE__) || defined(__WINCE_STANDARDSDK__)
     // move the dialog to its initial position without forcing repainting
     int x, y, w, h;
     (void)MSWGetCreateWindowCoords(pos, size, x, y, w, h);
 
     if ( x == (int)CW_USEDEFAULT )
     {
-        // centre it on the screen - what else can we do?
-        wxSize sizeDpy = wxGetDisplaySize();
-
-        x = (sizeDpy.x - w) / 2;
-        y = (sizeDpy.y - h) / 2;
+        // Let the system position the window, just set its size.
+        ::SetWindowPos(GetHwnd(), 0,
+                       0, 0, w, h,
+                       SWP_NOMOVE | SWP_NOZORDER);
     }
-
-#if !defined(__WXWINCE__) || defined(__WINCE_STANDARDSDK__)
-    if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
+    else // Move the window to the desired location and set its size too.
     {
-        wxLogLastError(wxT("MoveWindow"));
+        if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
+        {
+            wxLogLastError(wxT("MoveWindow"));
+        }
     }
-#endif
+#endif // !__WXWINCE__
 
     if ( !title.empty() )
     {
@@ -578,6 +611,8 @@ bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 
 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 {
+    delete m_menuSystem;
+
     SendDestroyEvent();
 
 #if defined(__SMARTPHONE__) || defined(__POCKETPC__)
@@ -608,7 +643,13 @@ void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 {
     ::ShowWindow(GetHwnd(), nShowCmd);
 
-    m_iconized = nShowCmd == SW_MINIMIZE;
+    // Hiding the window doesn't change its iconized state.
+    if ( nShowCmd != SW_HIDE )
+    {
+        // Otherwise restoring, maximizing or showing the window normally also
+        // makes it not iconized and only minimizing it does make it iconized.
+        m_iconized = nShowCmd == SW_MINIMIZE;
+    }
 }
 
 void wxTopLevelWindowMSW::ShowWithoutActivating()
@@ -737,6 +778,13 @@ bool wxTopLevelWindowMSW::IsMaximized() const
 
 void wxTopLevelWindowMSW::Iconize(bool iconize)
 {
+    if ( iconize == m_iconized )
+    {
+        // Do nothing, in particular don't restore non-iconized windows when
+        // Iconize(false) is called as this would wrongly un-maximize them.
+        return;
+    }
+
     if ( IsShown() )
     {
         // change the window state immediately
@@ -1219,6 +1267,41 @@ void wxTopLevelWindowMSW::RequestUserAttention(int flags)
     }
 }
 
+wxMenu *wxTopLevelWindowMSW::MSWGetSystemMenu() const
+{
+#ifndef __WXUNIVERSAL__
+    if ( !m_menuSystem )
+    {
+        HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE);
+        if ( !hmenu )
+        {
+            wxLogLastError(wxT("GetSystemMenu()"));
+            return NULL;
+        }
+
+        wxTopLevelWindowMSW * const
+            self = const_cast<wxTopLevelWindowMSW *>(this);
+
+        self->m_menuSystem = wxMenu::MSWNewFromHMENU(hmenu);
+
+        // We need to somehow associate this menu with this window to ensure
+        // that we get events from it. A natural idea would be to pretend that
+        // it's attached to our menu bar but this wouldn't work if we don't
+        // have any menu bar which is a common case for applications using
+        // custom items in the system menu (they mostly do it exactly because
+        // they don't have any other menus).
+        //
+        // So reuse the invoking window pointer instead, this is not exactly
+        // correct but doesn't seem to have any serious drawbacks.
+        m_menuSystem->SetInvokingWindow(self);
+    }
+#endif // #ifndef __WXUNIVERSAL__
+
+    return m_menuSystem;
+}
+
+// ----------------------------------------------------------------------------
+// Transparency support
 // ---------------------------------------------------------------------------
 
 bool wxTopLevelWindowMSW::SetTransparent(wxByte alpha)