currently avoid problems when releasing the capture during drag on osx_cocoa

[wxWidgets.git] / src / common / imaggif.cpp

diff --git a/src/common/imaggif.cpp b/src/common/imaggif.cpp
index 7b241bd6e19ac143aa056601b4d0b91803db9286..fdb9a4971d1af78c4521d8d47c9fe2bb64c1d961 100644 (file)
--- a/src/common/imaggif.cpp
+++ b/src/common/imaggif.cpp
@@ -89,7 +89,9 @@ bool wxGIFHandler::SaveFile( wxImage * WXUNUSED(image),
                              wxOutputStream& WXUNUSED(stream), bool verbose )
 {
     if (verbose)
+    {
         wxLogDebug(wxT("GIF: the handler is read-only!!"));
+    }
 
     return false;
 }
@@ -98,15 +100,19 @@ bool wxGIFHandler::DoCanRead( wxInputStream& stream )
 {
     wxGIFDecoder decod;
     return decod.CanRead(stream);
+         // it's ok to modify the stream position here
 }
 
-int wxGIFHandler::GetImageCount( wxInputStream& stream )
+int wxGIFHandler::DoGetImageCount( wxInputStream& stream )
 {
     wxGIFDecoder decod;
     wxGIFErrorCode error = decod.LoadGIF(stream);
     if ( (error != wxGIF_OK) && (error != wxGIF_TRUNCATED) )
         return -1;
 
+    // NOTE: this function modifies the current stream position but it's ok
+    //       (see wxImageHandler::GetImageCount)
+
     return decod.GetFrameCount();
 }