Add SDL2 sources

SDL2-2.0.12/test/testnativew32.c

@@ -0,0 +1,86 @@
+/*
+  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+#include "testnative.h"
+
+#ifdef TEST_NATIVE_WINDOWS
+
+static void *CreateWindowNative(int w, int h);
+static void DestroyWindowNative(void *window);
+
+NativeWindowFactory WindowsWindowFactory = {
+    "windows",
+    CreateWindowNative,
+    DestroyWindowNative
+};
+
+LRESULT CALLBACK
+WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    switch (msg) {
+    case WM_CLOSE:
+        DestroyWindow(hwnd);
+        break;
+    case WM_DESTROY:
+        PostQuitMessage(0);
+        break;
+    default:
+        return DefWindowProc(hwnd, msg, wParam, lParam);
+    }
+    return 0;
+}
+
+static void *
+CreateWindowNative(int w, int h)
+{
+    HWND hwnd;
+    WNDCLASS wc;
+
+    wc.style = 0;
+    wc.lpfnWndProc = WndProc;
+    wc.cbClsExtra = 0;
+    wc.cbWndExtra = 0;
+    wc.hInstance = GetModuleHandle(NULL);
+    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
+    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
+    wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
+    wc.lpszMenuName = NULL;
+    wc.lpszClassName = "SDL Test";
+
+    if (!RegisterClass(&wc)) {
+        MessageBox(NULL, "Window Registration Failed!", "Error!",
+                   MB_ICONEXCLAMATION | MB_OK);
+        return 0;
+    }
+
+    hwnd =
+        CreateWindow("SDL Test", "", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
+                     CW_USEDEFAULT, w, h, NULL, NULL, GetModuleHandle(NULL),
+                     NULL);
+    if (hwnd == NULL) {
+        MessageBox(NULL, "Window Creation Failed!", "Error!",
+                   MB_ICONEXCLAMATION | MB_OK);
+        return 0;
+    }
+
+    ShowWindow(hwnd, SW_SHOW);
+
+    return hwnd;
+}
+
+static void
+DestroyWindowNative(void *window)
+{
+    DestroyWindow((HWND) window);
+}
+
+#endif