More Windows build fixes

Signed-off-by: Gary Oberbrunner <[email protected]>

Author: garyo

Examples/Custom/custom.cpp

@@ -8,7 +8,8 @@
   crafted piece of image processing software.
  */
 
-#ifdef WIN32
+#ifdef _WIN32
+#define NOMINMAX
 #include <windows.h>
 #endif 
 
@@ -71,7 +72,7 @@ parseCustomParam(char *str, double &x, double &y)
 void
 writeCustomParam(char *str, int strlen, double x, double y)
 {
-#ifdef WIN32
+#ifdef _WIN32
   _snprintf(str, strlen, "%lg %lg", x, y);
 #else
   snprintf(str, strlen, "%lg %lg", x, y);

Examples/DrawSuite/drawsuite.cpp

@@ -12,7 +12,8 @@
   and so do nothing.
  */
 
-#ifdef WIN32
+#ifdef _WIN32
+#define NOMINMAX
 #include <windows.h>
 #endif
 

Examples/Overlay/overlay.cpp

@@ -12,7 +12,8 @@
   and so do nothing.
  */
 
-#ifdef WIN32
+#ifdef _WIN32
+#define NOMINMAX
 #include <windows.h>
 #endif