#2025 Including wtypes.h gives OLE errors

[Trent Gamblin]

#include <wtypes.h>
int main(void)
{
}

fails with a lot of errors like:

c:\mingw\include\objidl.h:1008:46: error: unknown type name 'OLECHAR'
  STDMETHOD(QueryBlanket)(THIS_ PDWORD,PDWORD,OLECHAR**,PDWORD,PDWORD,RPC_AUTHZ_
HANDLE*,PDWORD*) PURE;

Including windows.h first fixes it but previously working software is affected.

[Trent Gamblin]

Should have #include <wtypes.h> first line.

[Earnie Boyd]

The fix here is to move the inclusion of rpc.h in wtypes.h above the file guard.

Note that it is usually expected that windows.h is included before any other API header and I almost ping this as user land issue but I see that rpc.h includes windows.h already.

[Earnie Boyd]

• Description has changed:

Diff:

--- old
+++ new
@@ -1,12 +1,16 @@
+~~~~~
 #include <wtypes.h>
 int main(void)
 {
 }
+~~~~~

 fails with a lot of errors like:

+~~~~~
 c:\mingw\include\objidl.h:1008:46: error: unknown type name 'OLECHAR'
   STDMETHOD(QueryBlanket)(THIS_ PDWORD,PDWORD,OLECHAR**,PDWORD,PDWORD,RPC_AUTHZ_
 HANDLE*,PDWORD*) PURE;
+~~~~~

 Including windows.h first fixes it but previously working software is affected.

[Earnie Boyd]

Resolving the markdown for code issue.

[Earnie Boyd]

[#2047]