X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8b85d24e4cc885263d3bb72bd36a759fbd25631d..75515c52a48086d39f1584caec03fefaacb37306:/src/msw/ole/dataobj.cpp

diff --git a/src/msw/ole/dataobj.cpp b/src/msw/ole/dataobj.cpp
index 90e8ab88cb..14d98afe93 100644
--- a/src/msw/ole/dataobj.cpp
+++ b/src/msw/ole/dataobj.cpp
@@ -18,26 +18,27 @@
 // ----------------------------------------------------------------------------
 
 #ifdef __GNUG__
-  #pragma implementation "dataobj.h"
+    #pragma implementation "dataobj.h"
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #if defined(__BORLANDC__)
-  #pragma hdrstop
+    #pragma hdrstop
 #endif
+
+#if defined(__WIN32__) && !defined(__GNUWIN32_OLD__)
+
 #ifndef WX_PRECOMP
-#include "wx/intl.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
 #endif
-#include "wx/defs.h"
-
-#if defined(__WIN32__) && !defined(__GNUWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
 
-#include "wx/log.h"
 #include "wx/dataobj.h"
 
-#include <windows.h>
+#include "wx/msw/private.h"         // includes <windows.h>
+
 #ifdef wxUSE_NORLANDER_HEADERS
   #include <ole2.h>
 #endif
@@ -50,7 +51,9 @@
 
 #include <shlobj.h>
 
-#include  "wx/msw/ole/oleutils.h"
+#include "wx/msw/ole/oleutils.h"
+
+#include "wx/msw/dib.h"
 
 // ----------------------------------------------------------------------------
 // functions
@@ -62,10 +65,6 @@
     #define GetTymedName(tymed) ""
 #endif // Debug/!Debug
 
-// to be moved into wx/msw/bitmap.h
-extern size_t wxConvertBitmapToDIB(BITMAPINFO *pbi, const wxBitmap& bitmap);
-extern wxBitmap wxConvertDIBToBitmap(const BITMAPINFO *bmi);
-
 // ----------------------------------------------------------------------------
 // wxIEnumFORMATETC interface implementation
 // ----------------------------------------------------------------------------
@@ -124,22 +123,6 @@ private:
     bool m_mustDelete;
 };
 
-// ----------------------------------------------------------------------------
-// small helper class for getting screen DC (we're working with bitmaps and
-// DIBs here)
-// ----------------------------------------------------------------------------
-
-class ScreenHDC
-{
-public:
-    ScreenHDC() { m_hdc = GetDC(NULL);    }
-   ~ScreenHDC() { ReleaseDC(NULL, m_hdc); }
-    operator HDC() const { return m_hdc;  }
-
-private:
-    HDC m_hdc;
-};
-
 // ============================================================================
 // implementation
 // ============================================================================
@@ -315,6 +298,12 @@ STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
             break;
 
         case wxDF_METAFILE:
+            pmedium->hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
+                                           sizeof(METAFILEPICT));
+            if ( !pmedium->hGlobal ) {
+                wxLogLastError("GlobalAlloc");
+                return E_OUTOFMEMORY;
+            }
             pmedium->tymed = TYMED_MFPICT;
             break;
 
@@ -351,7 +340,7 @@ STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
     hr = GetDataHere(pformatetcIn, pmedium);
     if ( FAILED(hr) ) {
         // free resources we allocated
-        if ( pmedium->tymed == TYMED_HGLOBAL ) {
+        if ( pmedium->tymed & (TYMED_HGLOBAL | TYMED_MFPICT) ) {
             GlobalFree(pmedium->hGlobal);
         }
 
@@ -375,11 +364,6 @@ STDMETHODIMP wxIDataObject::GetDataHere(FORMATETC *pformatetc,
             break;
 
         case TYMED_MFPICT:
-            // this should be copied on bitmaps - but I don't have time for
-            // this now
-            wxFAIL_MSG(wxT("TODO - no support for metafiles in wxDataObject"));
-            break;
-
         case TYMED_HGLOBAL:
             {
                 // copy data
@@ -426,13 +410,21 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
             break;
 
         case TYMED_MFPICT:
-            // this should be copied on bitmaps - but I don't have time for
-            // this now
-            wxFAIL_MSG(wxT("TODO - no support for metafiles in wxDataObject"));
-            break;
-
         case TYMED_HGLOBAL:
             {
+                wxDataFormat format = pformatetc->cfFormat;
+
+                // this is quite weird, but for file drag and drop, explorer
+                // calls our SetData() with the formats we do *not* support!
+                //
+                // as we can't fix this bug in explorer (it's a bug because it
+                // should only use formats returned by EnumFormatEtc), do the
+                // check here
+                if ( !m_pDataObject->IsSupportedFormat(format) ) {
+                    // go away!
+                    return DV_E_FORMATETC;
+                }
+
                 // copy data
                 void *pBuf = GlobalLock(pmedium->hGlobal);
                 if ( pBuf == NULL ) {
@@ -447,7 +439,7 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
                 // synthetise it for known formats and we suppose that all data
                 // in custom formats starts with a DWORD containing the size
                 size_t size;
-                switch ( pformatetc->cfFormat )
+                switch ( format )
                 {
                     case CF_TEXT:
                     case CF_OEMTEXT:
@@ -471,6 +463,10 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
                         size = 0;
                         break;
 
+                    case CF_METAFILEPICT:
+                        size = sizeof(METAFILEPICT);
+                        break;
+
                     default:
                         {
                             // we suppose that the size precedes the data
@@ -480,7 +476,6 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
                         }
                 }
 
-                wxDataFormat format = pformatetc->cfFormat;
                 bool ok = m_pDataObject->SetData(format, size, pBuf);
 
                 GlobalUnlock(pmedium->hGlobal);
@@ -496,11 +491,17 @@ STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
     }
 
     if ( fRelease ) {
-        // we own the medium, so we must release it - but do *not* free the
-        // bitmap handle fi we have it because we have copied it elsewhere
-        if ( pmedium->tymed == TYMED_GDI )
+        // we own the medium, so we must release it - but do *not* free any
+        // data we pass by handle because we have copied it elsewhere
+        switch ( pmedium->tymed )
         {
-            pmedium->hBitmap = 0;
+            case TYMED_GDI:
+                pmedium->hBitmap = 0;
+                break;
+
+            case TYMED_MFPICT:
+                pmedium->hMetaFilePict = 0;
+                break;
         }
 
         ReleaseStgMedium(pmedium);
@@ -724,12 +725,12 @@ size_t wxBitmapDataObject::GetDataSize() const
 
 bool wxBitmapDataObject::GetDataHere(void *buf) const
 {
-    return wxConvertBitmapToDIB((BITMAPINFO *)buf, GetBitmap()) != 0;
+    return wxConvertBitmapToDIB((LPBITMAPINFO)buf, GetBitmap()) != 0;
 }
 
 bool wxBitmapDataObject::SetData(size_t len, const void *buf)
 {
-    wxBitmap bitmap(wxConvertDIBToBitmap((const BITMAPINFO *)buf));
+    wxBitmap bitmap(wxConvertDIBToBitmap((const LPBITMAPINFO)buf));
 
     if ( !bitmap.Ok() ) {
         wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
@@ -764,7 +765,7 @@ bool wxBitmapDataObject2::GetDataHere(void *pBuf) const
     return TRUE;
 }
 
-bool wxBitmapDataObject2::SetData(size_t len, const void *pBuf)
+bool wxBitmapDataObject2::SetData(size_t WXUNUSED(len), const void *pBuf)
 {
     HBITMAP hbmp = *(HBITMAP *)pBuf;
 
@@ -928,6 +929,8 @@ bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *pData)
     // get number of files (magic value -1)
     UINT nFiles = ::DragQueryFile(hdrop, (unsigned)-1, NULL, 0u);
 
+    wxCHECK_MSG ( nFiles != (UINT)-1, FALSE, wxT("wrong HDROP handle") );
+
     // for each file get the length, allocate memory and then get the name
     wxString str;
     UINT len, n;
@@ -963,17 +966,19 @@ size_t wxFileDataObject::GetDataSize() const
     // a double null at the end
 
     // if no filenames in list, size is 0
-    if (m_filenames.GetCount() == 0) return 0;
+    if ( m_filenames.GetCount() == 0 )
+        return 0;
 
     // inital size of DROPFILES struct + null byte
     size_t sz = sizeof(DROPFILES) + 1;
 
-    int i;
-    for (i=0; i<m_filenames.GetCount(); ++i)
+    size_t count = m_filenames.GetCount();
+    for ( size_t i = 0; i < count; i++ )
     {
         // add filename length plus null byte
         sz += m_filenames[i].Len() + 1;
     }
+
     return sz;
 }
 
@@ -983,29 +988,35 @@ bool wxFileDataObject::GetDataHere(void *pData) const
     // created using the size returned by GetDataSize()
 
     // if pData is NULL, or there are no files, return
-    if (!pData || m_filenames.GetCount() == 0) return FALSE;
+    if ( !pData || m_filenames.GetCount() == 0 )
+        return FALSE;
 
     // convert data pointer to a DROPFILES struct pointer
     LPDROPFILES pDrop = (LPDROPFILES) pData;
 
     // initialize DROPFILES struct
     pDrop->pFiles = sizeof(DROPFILES);
-    pDrop->fNC = FALSE;
+    pDrop->fNC = FALSE;                 // not non-client coords
+#if wxUSE_UNICODE
+    pDrop->fWide = TRUE;
+#else // ANSI
     pDrop->fWide = FALSE;
+#endif // Unicode/Ansi
 
     // set start of filenames list (null separated)
-    char *pbuf = (char*)pDrop + sizeof(DROPFILES);
+    wxChar *pbuf = (wxChar*) ((BYTE *)pDrop + sizeof(DROPFILES));
 
-    size_t i;
-    for (i=0; i<m_filenames.GetCount(); ++i)
+    size_t count = m_filenames.GetCount();
+    for (size_t i = 0; i < count; i++ )
     {
         // copy filename to pbuf and add null terminator
         size_t len = m_filenames[i].Len();
         memcpy(pbuf, m_filenames[i], len);
         pbuf += len;
-        *pbuf++ = '\0';
+        *pbuf++ = wxT('\0');
     }
-    *pbuf = '\0';	// add final null terminator
+
+    *pbuf = wxT('\0');	// add final null terminator
 
     return TRUE;
 }
@@ -1043,7 +1054,7 @@ static size_t wxGetNumOfBitmapColors(size_t bitsPerPixel)
     }
 }
 
-size_t wxConvertBitmapToDIB(BITMAPINFO *pbi, const wxBitmap& bitmap)
+size_t wxConvertBitmapToDIB(LPBITMAPINFO pbi, const wxBitmap& bitmap)
 {
     wxASSERT_MSG( bitmap.Ok(), wxT("invalid bmp can't be converted to DIB") );
 
@@ -1117,7 +1128,7 @@ size_t wxConvertBitmapToDIB(BITMAPINFO *pbi, const wxBitmap& bitmap)
     return dwLen + bi.biSizeImage;
 }
 
-wxBitmap wxConvertDIBToBitmap(const BITMAPINFO *pbmi)
+wxBitmap wxConvertDIBToBitmap(const LPBITMAPINFO pbmi)
 {
     // here we get BITMAPINFO struct followed by the actual bitmap bits and
     // BITMAPINFO starts with BITMAPINFOHEADER followed by colour info