[royce] 17499: fix to not crash when built with msvc6 ( bad calling convention on imports ).

fix to not crash when built with msvc6 ( bad calling convention on
imports ).
fix error-handling bugs, added missing error-handling
Modified: trunk/reactos/tools/rbuild/backend/msvc/genguid.cpp
  _____

Modified: trunk/reactos/tools/rbuild/backend/msvc/genguid.cpp
--- trunk/reactos/tools/rbuild/backend/msvc/genguid.cpp	2005-08-24
02:20:41 UTC (rev 17498)
+++ trunk/reactos/tools/rbuild/backend/msvc/genguid.cpp	2005-08-24
02:55:08 UTC (rev 17499)
@@ -24,41 +24,55 @@

#include <objbase.h>
 #include <stdio.h>

-static HRESULT (*pCoInitialize)(PVOID);
-static void (*pCoUninitialize)(void);
-static HRESULT (*pCoCreateGuid)(GUID*);
+typedef HRESULT _stdcall CoInitializeFunc ( PVOID );
+typedef void _stdcall CoUninitializeFunc ( void );
+typedef HRESULT _stdcall CoCreateGuidFunc ( GUID* );

+static CoInitializeFunc *pCoInitialize = NULL;
+static CoUninitializeFunc *pCoUninitialize = NULL;
+static CoCreateGuidFunc *pCoCreateGuid = NULL;
+
 void gen_guid()
 {
    GUID m_guid;
    HRESULT result;
-	char *strfmt = "";
-	HMODULE olelib;
+	bool good_guid = false;

-    /* Load ole32. We will need it later on */
-	olelib = LoadLibraryA( "ole32.dll" );
-
-	if (olelib != NULL)
-		pCoInitialize = (HRESULT (*)(void*))GetProcAddress(
olelib, "CoInitialize" );
-		pCoUninitialize = (void (*)())GetProcAddress( olelib,
"CoUninitialize" );
-		pCoCreateGuid = (HRESULT (*)(GUID*))GetProcAddress(
olelib, "CoCreateGuid" );
-
-	if (pCoInitialize(NULL) != S_OK)
+	// Load ole32. We will need it later on
+	HMODULE olelib = LoadLibrary ( "ole32.dll" );
+	if ( olelib != NULL )
    {
-		printf("Unable to initalize OLE libraries\n");
+		pCoInitialize = (CoInitializeFunc *)GetProcAddress(
olelib, "CoInitialize" );
+		pCoUninitialize = (CoUninitializeFunc *)GetProcAddress(
olelib, "CoUninitialize" );
+		pCoCreateGuid = (CoCreateGuidFunc *)GetProcAddress(
olelib, "CoCreateGuid" );
+		if ( !pCoInitialize || !pCoUninitialize ||
!pCoCreateGuid )
+			printf ( "Missing exports from ole32.dll\n" );
+		else
+		{
+			if (pCoInitialize(NULL) != S_OK)
+				printf("Unable to initalize OLE
libraries\n");
+			else
+			{
+				result = pCoCreateGuid(&m_guid);
+				if (result != S_OK)
+					printf("Unable to create
GUID\n");
+				else
+					good_guid = true;
+				pCoUninitialize();
+			}
+		}
+		FreeLibrary ( olelib );
    }
-	result = pCoCreateGuid(&m_guid);
-	if (result != S_OK) {
-		printf("Unable to create GUID\n");
-		pCoUninitialize();
+	if ( !good_guid )
+	{
+		// TODO FIXME - fall-back to random #'s
    }
-	strfmt =
"%08lX-%04X-%04x-%02X%02X-%02X%02X%02X%02X%02X%02X\r\n";
+	const char* strfmt =
"%08lX-%04X-%04x-%02X%02X-%02X%02X%02X%02X%02X%02X\r\n";

printf(strfmt,m_guid.Data1,m_guid.Data2,m_guid.Data3,m_guid.Data4[0],
-
m_guid.Data4[1],m_guid.Data4[2],m_guid.Data4[3],m_guid.Data4[4],m_guid.D
ata4[5],
-
m_guid.Data4[6],m_guid.Data4[7],m_guid.Data1,m_guid.Data2,m_guid.Data3,m
_guid.Data4[0],
-
m_guid.Data4[1],m_guid.Data4[2],m_guid.Data4[3],m_guid.Data4[4],m_guid.D
ata4[5],
-	m_guid.Data4[6],m_guid.Data4[7]);
-	pCoUninitialize();
+
m_guid.Data4[1],m_guid.Data4[2],m_guid.Data4[3],m_guid.Data4[4],m_guid.D
ata4[5],
+
m_guid.Data4[6],m_guid.Data4[7],m_guid.Data1,m_guid.Data2,m_guid.Data3,m
_guid.Data4[0],
+
m_guid.Data4[1],m_guid.Data4[2],m_guid.Data4[3],m_guid.Data4[4],m_guid.D
ata4[5],
+		m_guid.Data4[6],m_guid.Data4[7]);
 }

#else /* Linux, etc */