Added GradientFill stub.

dlls/msimg32/msimg32.spec

@@ -3,10 +3,10 @@ type win32
 
 import ntdll.dll
 
-debug_channels()
+debug_channels (msimg32)
 
 @ stub AlphaBlend
 @ stub DllInitialize
-@ stub GradientFill
+@ stdcall GradientFill (long ptr long ptr long long ) GradientFill
 @ stub TransparentBlt
 @ stub vSetDdrawflag

dlls/msimg32/msimg32_main.c

-/* nothing here yet */
+#include "winbase.h"
+#include "winerror.h"
+#include "debugtools.h"
+
+DEFAULT_DEBUG_CHANNEL(msimg32);
+
+BOOL WINAPI GradientFill(HDC hdc, void * vert_array, ULONG nvert, 
+		    void * grad_array, ULONG ngrad, ULONG mode)
+{
+  FIXME("stub: %ld vertices %ld gradients mode %lx\n", nvert, ngrad, mode);
+  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+  return FALSE;
+}