added wxImage::CanRead

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3421 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-08-18 21:22:54 +00:00
parent cae5359f18
commit 0828c0875e
8 changed files with 84 additions and 15 deletions
--- a/src/common/imagbmp.cpp
+++ b/src/common/imagbmp.cpp
@@ -401,6 +401,15 @@ bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream, bool WXUNUSE
     return TRUE;
 }

+bool wxBMPHandler::CanRead( wxInputStream& stream )
+{
+    unsigned char hdr[2];
+    
+    stream.Read(&hdr, 2);
+    stream.SeekI(-2, wxFromCurrent);
+    return (hdr[0] == 'B' && hdr[1] == 'M');
+}
+
 #endif // wxUSE_STREAMS