Remove SetPageTitle and GetPageTitle and make GetCurrentTitle actually return the...

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

diff --git a/include/wx/msw/dib.h b/include/wx/msw/dib.h
index 48f9382010f4d266e6b2077326ea8dd6d200161f..58061449f1222eae24ecdc92264b415bc52cc095 100644 (file)
--- a/include/wx/msw/dib.h
+++ b/include/wx/msw/dib.h
@@ -12,8 +12,8 @@
 #ifndef _WX_MSW_DIB_H_
 #define _WX_MSW_DIB_H_
 
-class WXDLLEXPORT wxBitmap;
-class WXDLLEXPORT wxPalette;
+class WXDLLIMPEXP_FWD_CORE wxBitmap;
+class WXDLLIMPEXP_FWD_CORE wxPalette;
 
 #include "wx/msw/private.h"
 
@@ -23,7 +23,7 @@ class WXDLLEXPORT wxPalette;
 // wxDIB: represents a DIB section
 // ----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxDIB
+class WXDLLIMPEXP_CORE wxDIB
 {
 public:
     // ctors and such
@@ -41,6 +41,10 @@ public:
     wxDIB(const wxBitmap& bmp)
         { Init(); (void)Create(bmp); }
 
+    // create a DIB from the Windows DDB
+    wxDIB(HBITMAP hbmp)
+        { Init(); (void)Create(hbmp); }
+
     // load a DIB from file (any depth is supoprted here unlike above)
     //
     // as above, use IsOk() to see if the bitmap was loaded successfully
@@ -49,7 +53,8 @@ public:
 
     // same as the corresponding ctors but with return value
     bool Create(int width, int height, int depth);
-    bool Create(const wxBitmap& bmp);
+    bool Create(const wxBitmap& bmp) { return Create(GetHbitmapOf(bmp)); }
+    bool Create(HBITMAP hbmp);
     bool Load(const wxString& filename);
 
     // dtor is not virtual, this class is not meant to be used polymorphically
@@ -60,7 +65,7 @@ public:
     // ----------
 
 #ifndef __WXWINCE__
-    // create a bitmap compatiblr with the given HDC (or screen by default) and
+    // create a bitmap compatible with the given HDC (or screen by default) and
     // return its handle, the caller is responsible for freeing it (using
     // DeleteObject())
     HBITMAP CreateDDB(HDC hdc = 0) const;
@@ -98,7 +103,8 @@ public:
 
     // get raw pointer to bitmap bits, you should know what you do if you
     // decide to use it
-    void *GetData() const { DoGetObject(); return m_data; }
+    unsigned char *GetData() const
+        { DoGetObject(); return (unsigned char *)m_data; }
 
 
     // HBITMAP conversion
@@ -132,12 +138,28 @@ public:
     // ------------------
 
 #if wxUSE_IMAGE
-    // create a DIB from the given image, the DIB will be either 24 or 32 (if
-    // the image has alpha channel) bpp
-    wxDIB(const wxImage& image) { Init(); (void)Create(image); }
+    // Possible formats for DIBs created by the functions below.
+    enum PixelFormat
+    {
+        PixelFormat_PreMultiplied = 0,
+        PixelFormat_NotPreMultiplied = 1
+    };
+
+    // Create a DIB from the given image, the DIB will be either 24 or 32 (if
+    // the image has alpha channel) bpp.
+    //
+    // By default the DIB stores pixel data in pre-multiplied format so that it
+    // can be used with ::AlphaBlend() but it is also possible to disable
+    // pre-multiplication for the DIB to be usable with ImageList_Draw() which
+    // does pre-multiplication internally.
+    wxDIB(const wxImage& image, PixelFormat pf = PixelFormat_PreMultiplied)
+    {
+        Init();
+        (void)Create(image, pf);
+    }
 
     // same as the above ctor but with the return code
-    bool Create(const wxImage& image);
+    bool Create(const wxImage& image, PixelFormat pf = PixelFormat_PreMultiplied);
 
     // create wxImage having the same data as this DIB
     wxImage ConvertToImage() const;
@@ -194,11 +216,6 @@ private:
     // the case
     bool m_ownsHandle;
 
-    // if true, we have alpha, if false we don't (note that we can still have
-    // m_depth == 32 but the last component is then simply padding and not
-    // alpha)
-    bool m_hasAlpha;
-
 
     // DIBs can't be copied
     wxDIB(const wxDIB&);
@@ -214,7 +231,6 @@ void wxDIB::Init()
 {
     m_handle = 0;
     m_ownsHandle = true;
-    m_hasAlpha = false;
 
     m_data = NULL;