build: replace WIN32 => _WIN32

modules/highgui/src/precomp.hpp

@@ -60,7 +60,7 @@
 #include <ctype.h>
 #include <assert.h>
 
-#if defined WIN32 || defined WINCE
+#if defined _WIN32 || defined WINCE
     #include <windows.h>
     #undef small
     #undef min

modules/highgui/src/window_QT.cpp

@@ -351,7 +351,7 @@ CV_IMPL int cvWaitKey(int delay)
 
                 //to decrease CPU usage
                 //sleep 1 millisecond
-#if defined WIN32 || defined _WIN32 || defined WIN64 || defined _WIN64
+#if defined _WIN32
                 Sleep(1);
 #else
                 usleep(1000);

modules/highgui/src/window_gtk.cpp

@@ -42,7 +42,7 @@
 #include "precomp.hpp"
 #include "opencv2/imgproc.hpp"
 
-#ifndef WIN32
+#ifndef _WIN32
 
 #if defined (HAVE_GTK)
 
@@ -2097,6 +2097,6 @@ CV_IMPL int cvWaitKey( int delay )
 
 
 #endif  // HAVE_GTK
-#endif  // WIN32
+#endif  // _WIN32
 
 /* End of file. */

modules/highgui/src/window_w32.cpp

@@ -42,7 +42,7 @@
 #include "precomp.hpp"
 #include <windowsx.h> // required for GET_X_LPARAM() and GET_Y_LPARAM() macros
 
-#if defined WIN32 || defined _WIN32
+#if defined _WIN32
 
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
@@ -2426,4 +2426,4 @@ cvSetPostprocessFuncWin32_(const void* callback)
     hg_on_postprocess = (CvWin32WindowCallback)callback;
 }
 
-#endif //WIN32
+#endif //_WIN32