--- mstools/samples/showdib/drawdib.c	2018/08/09 18:20:01	1.1
+++ mstools/samples/showdib/drawdib.c	2018/08/09 18:21:42	1.1.1.3
@@ -470,7 +470,7 @@ VOID BandDIB (
 		lpbi->biHeight = wRead ;
 
 		/* Set the DIB bits to a device-dependent format */
-		if (lpbi->biHeight != (DWORD)SetDIBits (hMemDC,
+		if (lpbi->biHeight != (int)SetDIBits (hMemDC,
 						       hBitmap,
 						       0,
 						       (WORD)lpbi->biHeight,
@@ -555,9 +555,11 @@ VOID SizeWindow (HWND hWnd)
 
     /* Extract the filename from the full pathname */
     pstr = achFileName + lstrlen(achFileName) - 1;
-    while ((*pstr != '\\') && (*pstr != ':') && (pstr >= achFileName))
+    while ((*pstr != '\\') && (*pstr != ':') && (pstr > achFileName))
 	    pstr--;
-    pstr++;
+
+    if(pstr != achFileName)
+            pstr++;
 
     /* Format filename along with the DIB attributes */
     sprintf (Name,
@@ -965,7 +967,7 @@ BOOL fDialog (
 
     hInst = (HANDLE)GetWindowLong (hwnd, GWL_HINSTANCE);
     fpfn  = MakeProcInstance (fpfn, hInst);
-    f = DialogBox (hInst, MAKEINTRESOURCE(id), hwnd, (WNDPROC)fpfn);
+    f = DialogBox (hInst, MAKEINTRESOURCE(id), hwnd, (DLGPROC)fpfn);
     FreeProcInstance (fpfn);
     return f;
 }