--- /dev/null
+/*
+ * A basic example of Win32 programming in C.
+ *
+ * This source code is in the PUBLIC DOMAIN and has NO WARRANTY.
+ *
+ * Colin Peters <colinp at ma.kcom.ne.jp>
+ */
+#include <windows.h>
+#include <string.h>
+
+/*
+ * This is the window function for the main window. Whenever a message is
+ * dispatched using DispatchMessage (or sent with SendMessage) this function
+ * gets called with the contents of the message.
+ */
+LRESULT CALLBACK
+MainWndProc (HWND hwnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
+{
+ /* The window handle for the "Click Me" button. */
+ static HWND hwndButton = 0;
+ static int cx, cy; /* Height and width of our button. */
+
+ HDC hdc; /* A device context used for drawing */
+ PAINTSTRUCT ps; /* Also used during window drawing */
+ RECT rc; /* A rectangle used during drawing */
+
+ /*
+ * Perform processing based on what kind of message we got.
+ */
+ switch (nMsg)
+ {
+ case WM_CREATE:
+ {
+ /* The window is being created. Create our button
+ * window now. */
+ TEXTMETRIC tm;
+
+ /* First we use the system fixed font size to choose
+ * a nice button size. */
+ hdc = GetDC (hwnd);
+ SelectObject (hdc, GetStockObject (SYSTEM_FIXED_FONT));
+ GetTextMetrics (hdc, &tm);
+ cx = tm.tmAveCharWidth * 30;
+ cy = (tm.tmHeight + tm.tmExternalLeading) * 2;
+ ReleaseDC (hwnd, hdc);
+
+ /* Now create the button */
+ hwndButton = CreateWindow (
+ "button", /* Builtin button class */
+ "Click Here",
+ WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
+ 0, 0, cx, cy,
+ hwnd, /* Parent is this window. */
+ (HMENU) 1, /* Control ID: 1 */
+ ((LPCREATESTRUCT) lParam)->hInstance,
+ NULL
+ );
+
+ return 0;
+ break;
+ }
+
+ case WM_DESTROY:
+ /* The window is being destroyed, close the application
+ * (the child button gets destroyed automatically). */
+ PostQuitMessage (0);
+ return 0;
+ break;
+
+ case WM_PAINT:
+ /* The window needs to be painted (redrawn). */
+ hdc = BeginPaint (hwnd, &ps);
+ GetClientRect (hwnd, &rc);
+
+ /* Draw "Hello, World" in the middle of the upper
+ * half of the window. */
+ rc.bottom = rc.bottom / 2;
+ DrawText (hdc, "Hello, World", -1, &rc,
+ DT_SINGLELINE | DT_CENTER | DT_VCENTER);
+
+ EndPaint (hwnd, &ps);
+ return 0;
+ break;
+
+ case WM_SIZE:
+ /* The window size is changing. If the button exists
+ * then place it in the center of the bottom half of
+ * the window. */
+ if (hwndButton &&
+ (wParam == SIZEFULLSCREEN ||
+ wParam == SIZENORMAL)
+ )
+ {
+ rc.left = (LOWORD(lParam) - cx) / 2;
+ rc.top = HIWORD(lParam) * 3 / 4 - cy / 2;
+ MoveWindow (
+ hwndButton,
+ rc.left, rc.top, cx, cy, TRUE);
+ }
+ break;
+
+ case WM_COMMAND:
+ /* Check the control ID, notification code and
+ * control handle to see if this is a button click
+ * message from our child button. */
+ if (LOWORD(wParam) == 1 &&
+ HIWORD(wParam) == BN_CLICKED &&
+ (HWND) lParam == hwndButton)
+ {
+ /* Our button was clicked. Close the window. */
+ DestroyWindow (hwnd);
+ }
+ return 0;
+ break;
+ }
+
+ /* If we don't handle a message completely we hand it to the system
+ * provided default window function. */
+ return DefWindowProc (hwnd, nMsg, wParam, lParam);
+}
+
+
+int STDCALL
+WinMain (HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmd, int nShow)
+{
+ HWND hwndMain; /* Handle for the main window. */
+ MSG msg; /* A Win32 message structure. */
+ WNDCLASSEX wndclass; /* A window class structure. */
+ char* szMainWndClass = "WinTestWin";
+ /* The name of the main window class */
+
+ /*
+ * First we create a window class for our main window.
+ */
+
+ /* Initialize the entire structure to zero. */
+ memset (&wndclass, 0, sizeof(WNDCLASSEX));
+
+ /* This class is called WinTestWin */
+ wndclass.lpszClassName = szMainWndClass;
+
+ /* cbSize gives the size of the structure for extensibility. */
+ wndclass.cbSize = sizeof(WNDCLASSEX);
+
+ /* All windows of this class redraw when resized. */
+ wndclass.style = CS_HREDRAW | CS_VREDRAW;
+
+ /* All windows of this class use the MainWndProc window function. */
+ wndclass.lpfnWndProc = MainWndProc;
+
+ /* This class is used with the current program instance. */
+ wndclass.hInstance = hInst;
+
+ /* Use standard application icon and arrow cursor provided by the OS */
+ wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
+ wndclass.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
+ wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
+
+ /* Color the background white */
+ wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH);
+
+ /*
+ * Now register the window class for use.
+ */
+ RegisterClassEx (&wndclass);
+
+ /*
+ * Create our main window using that window class.
+ */
+ hwndMain = CreateWindow (
+ szMainWndClass, /* Class name */
+ "Hello", /* Caption */
+ WS_OVERLAPPEDWINDOW, /* Style */
+ CW_USEDEFAULT, /* Initial x (use default) */
+ CW_USEDEFAULT, /* Initial y (use default) */
+ CW_USEDEFAULT, /* Initial x size (use default) */
+ CW_USEDEFAULT, /* Initial y size (use default) */
+ NULL, /* No parent window */
+ NULL, /* No menu */
+ hInst, /* This program instance */
+ NULL /* Creation parameters */
+ );
+
+ /*
+ * Display the window which we just created (using the nShow
+ * passed by the OS, which allows for start minimized and that
+ * sort of thing).
+ */
+ ShowWindow (hwndMain, nShow);
+ UpdateWindow (hwndMain);
+
+ /*
+ * The main message loop. All messages being sent to the windows
+ * of the application (or at least the primary thread) are retrieved
+ * by the GetMessage call, then translated (mainly for keyboard
+ * messages) and dispatched to the appropriate window procedure.
+ * This is the simplest kind of message loop. More complex loops
+ * are required for idle processing or handling modeless dialog
+ * boxes. When one of the windows calls PostQuitMessage GetMessage
+ * will return zero and the wParam of the message will be filled
+ * with the argument to PostQuitMessage. The loop will end and
+ * the application will close.
+ */
+ while (GetMessage (&msg, NULL, 0, 0))
+ {
+ TranslateMessage (&msg);
+ DispatchMessage (&msg);
+ }
+ return msg.wParam;
+}
+
+/* EOF */
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