--- q_a/samples/ntsd/mdi.c	2018/08/09 18:29:36	1.1.1.2
+++ q_a/samples/ntsd/mdi.c	2018/08/09 18:30:02	1.1.1.3
@@ -47,12 +47,10 @@ typedef struct _PerWndInfo {
 BOOL InitializeApp   (void);
 LONG APIENTRY MainWndProc     (HWND, UINT, DWORD, LONG);
 LONG APIENTRY MDIWndProc      (HWND, UINT, DWORD, LONG);
-LONG APIENTRY About	     (HWND, UINT, DWORD, LONG);
+BOOL CALLBACK About           (HWND, UINT, DWORD, LONG);
 LONG APIENTRY TextWndProc     (HWND, UINT, DWORD, LONG);
 VOID vTest	     (PINFO);
 
-extern int FAR PASCAL ShellAbout(HWND, LPCSTR, LPCSTR, HICON);
-
 /***************************************************************************\
 * WinMain
 *
@@ -281,10 +279,8 @@ long APIENTRY MainWndProc(
 
 
 	    case MM_ABOUT:
-                ShellAbout(ghwndMain, "MDI Demo", "Microsoft Developer Support", NULL);
-
-	    //	if (DialogBox(ghModule, "AboutBox", ghwndMain, (DLGPROC)About) == -1)
-	    //		MessageBox(ghwndMain, "DEMO: About Dialog Creation Error!", "Error", MB_OK);
+	    	if (DialogBox(ghModule, "AboutBox", ghwndMain, (DLGPROC)About) == -1)
+	    		MessageBox(ghwndMain, "DEMO: About Dialog Creation Error!", "Error", MB_OK);
 		return 0L;
 
             //
@@ -511,7 +507,7 @@ long APIENTRY MDIWndProc(
 * 04-13-91 ????      Created.
 \***************************************************************************/
 
-long APIENTRY About(
+BOOL CALLBACK About (
     HWND hDlg,
     UINT message,
     DWORD wParam,