use MSWAlwaysDrawBg() to fix the problem with black background; rewrote/cleaned up...

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

diff --git a/include/wx/msw/dib.h b/include/wx/msw/dib.h
index c11e4e4d7289c4ab5efac48420370dba6590bbec..0a9fd4587a9a8287382075eec35e35b7cc69e6fe 100644 (file)
--- a/include/wx/msw/dib.h
+++ b/include/wx/msw/dib.h
@@ -6,7 +6,7 @@
 // Created:     03.03.03 (replaces the old file with the same name)
 // RCS-ID:      $Id$
 // Copyright:   (c) 1997-2003 wxWidgets team
-// Licence:     wxWidgets licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_MSW_DIB_H_
@@ -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
@@ -50,6 +54,7 @@ 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(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
@@ -194,6 +200,11 @@ 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&);
@@ -209,6 +220,7 @@ void wxDIB::Init()
 {
     m_handle = 0;
     m_ownsHandle = true;
+    m_hasAlpha = false;
 
     m_data = NULL;