X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a5b1be33b7c93a69932d080fd544176bd9220615..a8a3ccb853083fef8c96ba7cb422790a8852dbde:/include/wx/msw/window.h

diff --git a/include/wx/msw/window.h b/include/wx/msw/window.h
index a65fa4910a..33b4354107 100644
--- a/include/wx/msw/window.h
+++ b/include/wx/msw/window.h
@@ -13,7 +13,7 @@
 #ifndef _WX_WINDOW_H_
 #define _WX_WINDOW_H_
 
-enum wxSystemColour;
+#include "wx/settings.h"        // solely for wxSystemColour
 
 // if this is set to 1, we use deferred window sizing to reduce flicker when
 // resizing complicated window hierarchies, but this can in theory result in
@@ -234,15 +234,6 @@ public:
     // created yet)
     void MSWUpdateStyle(long flagsOld, long exflagsOld);
 
-    // translate wxWidgets coords into Windows ones suitable to be passed to
-    // ::CreateWindow()
-    //
-    // returns true if non default coords are returned, false otherwise
-    bool MSWGetCreateWindowCoords(const wxPoint& pos,
-                                  const wxSize& size,
-                                  int& x, int& y,
-                                  int& w, int& h) const;
-
     // get the HWND to be used as parent of this window with CreateWindow()
     virtual WXHWND MSWGetParent() const;
 
@@ -404,16 +395,16 @@ public:
     // the hDC parameter is the DC background will be drawn on, it can be used
     // to call SetBrushOrgEx() on it if the returned brush is a bitmap one
     //
-    // child parameter is never NULL
+    // child parameter is never NULL, it can be this window itself or one of
+    // its (grand)children
     //
     // the base class version returns a solid brush if we have a non default
     // background colour or 0 otherwise
     virtual WXHBRUSH MSWGetBgBrushForChild(WXHDC hDC, wxWindowMSW *child);
 
     // return the background brush to use for painting the given window by
-    // quering the parent windows via their MSWGetBgBrushForChild() recursively
-    WXHBRUSH MSWGetBgBrush(WXHDC hDC) { return MSWGetBgBrush(hDC, this); }
-    WXHBRUSH MSWGetBgBrush(WXHDC hDC, wxWindowMSW *child);
+    // querying the parent windows via MSWGetBgBrushForChild() recursively
+    WXHBRUSH MSWGetBgBrush(WXHDC hDC);
 
     enum MSWThemeColour
     {
@@ -428,7 +419,7 @@ public:
                                int themePart,
                                int themeState,
                                MSWThemeColour themeColour,
-                               wxSystemColour fallback);
+                               wxSystemColour fallback) const;
 
     // gives the parent the possibility to draw its children background, e.g.
     // this is used by wxNotebook to do it using DrawThemeBackground()
@@ -447,6 +438,27 @@ public:
         return true;
     }
 
+#if !defined(__WXWINCE__) && !defined(__WXUNIVERSAL__)
+    #define wxHAS_MSW_BACKGROUND_ERASE_HOOK
+#endif
+
+#ifdef wxHAS_MSW_BACKGROUND_ERASE_HOOK
+    // allows the child to hook into its parent WM_ERASEBKGND processing: call
+    // MSWSetEraseBgHook() with a non-NULL window to make parent call
+    // MSWEraseBgHook() on this window (don't forget to reset it to NULL
+    // afterwards)
+    //
+    // this hack is used by wxToolBar, see comments there
+    void MSWSetEraseBgHook(wxWindow *child);
+
+    // return true if WM_ERASEBKGND is currently hooked
+    bool MSWHasEraseBgHook() const;
+
+    // called when the window on which MSWSetEraseBgHook() had been called
+    // receives WM_ERASEBKGND
+    virtual bool MSWEraseBgHook(WXHDC WXUNUSED(hDC)) { return false; }
+#endif // wxHAS_MSW_BACKGROUND_ERASE_HOOK
+
     // common part of Show/HideWithEffect()
     bool MSWShowWithEffect(bool show,
                            wxShowEffect effect,
@@ -571,6 +583,13 @@ protected:
     // for state as the system will decide for us what needs to be set
     void MSWUpdateUIState(int action, int state = 0);
 
+    // translate wxWidgets coords into Windows ones suitable to be passed to
+    // ::CreateWindow(), called from MSWCreate()
+    virtual void MSWGetCreateWindowCoords(const wxPoint& pos,
+                                          const wxSize& size,
+                                          int& x, int& y,
+                                          int& w, int& h) const;
+
 private:
     // common part of all ctors
     void Init();