build: replace WIN32 => _WIN32

samples/cpp/detect_mser.cpp

@@ -6,7 +6,7 @@
 #include <map>
 #include <iostream>
 #ifdef HAVE_OPENGL
-#ifdef WIN32
+#ifdef _WIN32
 #define WIN32_LEAN_AND_MEAN 1
 #define NOMINMAX 1
 #include <windows.h>

samples/gpu/opengl.cpp

@@ -1,13 +1,10 @@
 #include <iostream>
 
-#ifdef WIN32
+#ifdef _WIN32
     #define WIN32_LEAN_AND_MEAN 1
     #define NOMINMAX 1
     #include <windows.h>
 #endif
-#if defined(_WIN64)
-    #include <windows.h>
-#endif
 
 #if defined(__APPLE__)
     #include <OpenGL/gl.h>

samples/gpu/stereo_multi.cpp

@@ -1,7 +1,7 @@
 // This sample demonstrates working on one piece of data using two GPUs.
 // It splits input into two parts and processes them separately on different GPUs.
 
-#ifdef WIN32
+#ifdef _WIN32
     #define NOMINMAX
     #include <windows.h>
 #else
@@ -25,7 +25,7 @@ using namespace cv::cuda;
 // Thread
 // OS-specific wrappers for multi-threading
 
-#ifdef WIN32
+#ifdef _WIN32
 class Thread
 {
     struct UserData

samples/gpu/video_writer.cpp

@@ -2,7 +2,7 @@
 
 #include "opencv2/opencv_modules.hpp"
 
-#if defined(HAVE_OPENCV_CUDACODEC) && defined(WIN32)
+#if defined(HAVE_OPENCV_CUDACODEC) && defined(_WIN32)
 
 #include <vector>
 #include <numeric>

samples/opengl/opengl_interop.cpp

@@ -5,7 +5,7 @@
 // and call cv::Blur function. The result is mapped back to OpenGL texture
 // and rendered through OpenGL API.
 */
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
 # define WIN32_LEAN_AND_MEAN
 # include <windows.h>
 #elif defined(__linux__)
@@ -27,7 +27,7 @@
 
 #include "winapp.hpp"
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
 # pragma comment(lib, "opengl32.lib")
 # pragma comment(lib, "glu32.lib")
 #endif
@@ -74,7 +74,7 @@ public:
         WinApp::cleanup();
     }
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
     virtual LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
     {
         switch (message)
@@ -169,7 +169,7 @@ public:
 
     int init()
     {
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
         m_hDC = GetDC(m_hWnd);
 
         if (setup_pixel_format() != 0)
@@ -219,7 +219,7 @@ public:
 
     void print_info(MODE mode, float time, cv::String& oclDevName)
     {
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
         HDC hDC = m_hDC;
 
         HFONT hFont = (HFONT)::GetStockObject(SYSTEM_FONT);
@@ -323,7 +323,7 @@ public:
             glTexCoord2f(1.0f, 0.0f); glVertex3f(1.0f, 1.0f, 0.1f);
             glEnd();
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
             SwapBuffers(m_hDC);
 #elif defined(__linux__)
             glXSwapBuffers(m_display, m_window);
@@ -394,7 +394,7 @@ protected:
         m_timer.stop();
     }
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
     int setup_pixel_format()
     {
         PIXELFORMATDESCRIPTOR  pfd;
@@ -459,7 +459,7 @@ private:
     bool               m_demo_processing;
     MODE               m_mode;
     cv::String         m_modeStr[2];
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
     HDC                m_hDC;
     HGLRC              m_hRC;
 #elif defined(__linux__)
@@ -524,7 +524,7 @@ int main(int argc, char** argv)
     int width  = (int)cap.get(CAP_PROP_FRAME_WIDTH);
     int height = (int)cap.get(CAP_PROP_FRAME_HEIGHT);
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
     string wndname = "WGL Window";
 #elif defined(__linux__)
     string wndname = "GLX Window";

samples/opengl/winapp.hpp

@@ -1,4 +1,4 @@
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
 # define WIN32_LEAN_AND_MEAN
 # include <windows.h>
 #elif defined(__linux__)
@@ -10,13 +10,13 @@
 #include <string>
 
 #include <GL/gl.h>
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
 # include <GL/glu.h>
 #elif defined(__linux__)
 # include <GL/glx.h>
 #endif
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
 # define WINCLASS "WinAppWnd"
 #endif
 
@@ -78,21 +78,21 @@ public:
         m_width       = width;
         m_height      = height;
         m_window_name = window_name;
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
         m_hInstance   = ::GetModuleHandle(NULL);
 #endif
     }
 
     virtual ~WinApp()
     {
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
         ::UnregisterClass(WINCLASS, m_hInstance);
 #endif
     }
 
     int create()
     {
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
         WNDCLASSEX wcex;
 
         wcex.cbSize        = sizeof(WNDCLASSEX);
@@ -166,7 +166,7 @@ public:
 
     virtual void cleanup()
     {
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
         ::DestroyWindow(m_hWnd);
 #elif defined(__linux__)
         XDestroyWindow(m_display, m_window);
@@ -174,13 +174,13 @@ public:
 #endif
     }
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
     virtual LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) = 0;
 #endif
 
     int run()
     {
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
         MSG msg;
 
         ::ZeroMemory(&msg, sizeof(msg));
@@ -217,7 +217,7 @@ public:
 
 protected:
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
     static LRESULT CALLBACK StaticWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
     {
         WinApp* pWnd;
@@ -252,7 +252,7 @@ protected:
 
     virtual void idle() = 0;
 
-#if defined(WIN32) || defined(_WIN32)
+#if defined(_WIN32)
     HINSTANCE    m_hInstance;
     HWND         m_hWnd;
 #elif defined(__linux__)