Provide NSAutoreleasePool instances during initialization

[wxWidgets.git] / include / wx / msw / private.h

diff --git a/include/wx/msw/private.h b/include/wx/msw/private.h
index 21ce06bcf969633c20a37dfe35c3a766e22d5642..3cda5809f9d459a5f88bf5c9bc5fee4f2bf16024 100644 (file)
--- a/include/wx/msw/private.h
+++ b/include/wx/msw/private.h
@@ -183,22 +183,6 @@ WXDLLEXPORT_DATA(extern HFONT) wxSTATUS_LINE_FONT;
 extern LONG APIENTRY _EXPORT
   wxSubclassedGenericControlProc(WXHWND hWnd, WXUINT message, WXWPARAM wParam, WXLPARAM lParam);
 
-// ---------------------------------------------------------------------------
-// constants which might miss from some compilers' headers
-// ---------------------------------------------------------------------------
-
-#if !defined(__WIN32__) && !defined(WS_EX_CLIENTEDGE)
-    #define WS_EX_CLIENTEDGE 0
-#endif
-
-#if defined(__WIN32__) && !defined(WS_EX_CLIENTEDGE)
-    #define WS_EX_CLIENTEDGE 0x00000200L
-#endif
-
-#ifndef ENDSESSION_LOGOFF
-    #define ENDSESSION_LOGOFF    0x80000000
-#endif
-
 // ---------------------------------------------------------------------------
 // useful macros and functions
 // ---------------------------------------------------------------------------
@@ -213,6 +197,7 @@ extern LONG APIENTRY _EXPORT
 #if wxUSE_GUI
 
 #include <wx/gdicmn.h>
+#include <wx/colour.h>
 
 // make conversion from wxColour and COLORREF a bit less painful
 inline COLORREF wxColourToRGB(const wxColour& c)
@@ -278,6 +263,17 @@ extern void PixelToHIMETRIC(LONG *x, LONG *y);
 // to invert the mask each time we pass one/get one to/from Windows
 extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);
 
+// Creates an icon or cursor depending from a bitmap
+//
+// The bitmap must be valid and it should have a mask. If it doesn't, a default
+// mask is created using light grey as the transparent colour.
+extern HICON wxBitmapToHICON(const wxBitmap& bmp);
+
+// Same requirments as above apply and the bitmap must also have the correct
+// size.
+extern
+HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY);
+
 // get (x, y) from DWORD - notice that HI/LOWORD can *not* be used because they
 // will fail on system with multiple monitors where the coords may be negative
 //
@@ -290,12 +286,18 @@ extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);
 // get the current state of SHIFT/CTRL keys
 inline bool wxIsShiftDown()
 {
-    return (::GetKeyState(VK_SHIFT) & 0x100) != 0;
+//    return (::GetKeyState(VK_SHIFT) & 0x100) != 0;
+    // Returns different negative values on WinME and WinNT,
+    // so simply test for negative value.
+    return ::GetKeyState(VK_SHIFT) < 0;
 }
 
 inline bool wxIsCtrlDown()
 {
-    return (::GetKeyState(VK_CONTROL) & 0x100) != 0;
+//    return (::GetKeyState(VK_CONTROL) & 0x100) != 0;
+    // Returns different negative values on WinME and WinNT,
+    // so simply test for negative value.
+    return ::GetKeyState(VK_CONTROL) < 0;
 }
 
 // wrapper around GetWindowRect() and GetClientRect() APIs doing error checking
@@ -334,6 +336,20 @@ inline RECT wxGetClientRect(HWND hwnd)
 // small helper classes
 // ---------------------------------------------------------------------------
 
+// a template to make initializing Windows styructs less painful: it zeroes all
+// the struct fields and also sets cbSize member to the correct value (and so
+// can be only used with structures which have this member...)
+template <class T>
+struct WinStruct : public T
+{
+    WinStruct()
+    {
+        ::ZeroMemory(this, sizeof(T));
+        cbSize = sizeof(T);
+    }
+};
+
+
 // create an instance of this class and use it as the HDC for screen, will
 // automatically release the DC going out of scope
 class ScreenHDC
@@ -346,20 +362,24 @@ public:
 
 private:
     HDC m_hdc;
+
+    DECLARE_NO_COPY_CLASS(ScreenHDC)
 };
 
-// the same as ScreenHDC but for memory DCs: creates the HDC in ctor and
-// destroys it in dtor
+// the same as ScreenHDC but for memory DCs: creates the HDC compatible with
+// the given one (screen by default) in ctor and destroys it in dtor
 class MemoryHDC
 {
 public:
-    MemoryHDC() { m_hdc = ::CreateCompatibleDC(NULL); }
-   ~MemoryHDC() { ::DeleteObject(m_hdc);              }
+    MemoryHDC(HDC hdc = 0) { m_hdc = ::CreateCompatibleDC(hdc); }
+   ~MemoryHDC() { ::DeleteDC(m_hdc); }
 
     operator HDC() const { return m_hdc; }
 
 private:
     HDC m_hdc;
+
+    DECLARE_NO_COPY_CLASS(MemoryHDC)
 };
 
 // a class which selects a GDI object into a DC in its ctor and deselects in
@@ -378,6 +398,47 @@ public:
 private:
    HDC m_hdc;
    HGDIOBJ m_hgdiobj;
+
+   DECLARE_NO_COPY_CLASS(SelectInHDC)
+};
+
+// when working with global pointers (which is unfortunately still necessary
+// sometimes, e.g. for clipboard) it is important to unlock them exactly as
+// many times as we lock them which just asks for using a "smart lock" class
+class GlobalPtr
+{
+public:
+    GlobalPtr(HGLOBAL hGlobal) : m_hGlobal(hGlobal)
+    {
+        m_ptr = ::GlobalLock(hGlobal);
+        if ( !m_ptr )
+        {
+            wxLogLastError(_T("GlobalLock"));
+        }
+    }
+
+    ~GlobalPtr()
+    {
+        if ( !::GlobalUnlock(m_hGlobal) )
+        {
+#ifdef __WXDEBUG__
+            // this might happen simply because the block became unlocked
+            DWORD dwLastError = ::GetLastError();
+            if ( dwLastError != NO_ERROR )
+            {
+                wxLogApiError(_T("GlobalUnlock"), dwLastError);
+            }
+#endif // __WXDEBUG__
+        }
+    }
+
+    operator void *() const { return m_ptr; }
+
+private:
+    HGLOBAL m_hGlobal;
+    void *m_ptr;
+
+    DECLARE_NO_COPY_CLASS(GlobalPtr)
 };
 
 // ---------------------------------------------------------------------------
@@ -425,9 +486,7 @@ private:
 // global data
 // ---------------------------------------------------------------------------
 
-WXDLLEXPORT_DATA(extern wxChar*) wxBuffer;
-
-WXDLLEXPORT_DATA(extern HINSTANCE) wxhInstance;
+WXDLLIMPEXP_DATA_BASE(extern HINSTANCE) wxhInstance;
 
 // ---------------------------------------------------------------------------
 // global functions