First commit

src/main.c

@@ -0,0 +1,83 @@
+#include <stdio.h>
+#include <wchar.h>
+#include <windows.h>
+#include <winuser.h>
+
+// int _main() {
+//     return 0;
+// }
+
+// #ifdef __MINGW32__
+
+LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
+    switch (uMsg) {
+    case WM_DESTROY:
+        PostQuitMessage(0);
+        return 0;
+
+    case WM_PAINT: {
+        PAINTSTRUCT ps;
+        HDC hdc = BeginPaint(hwnd, &ps);
+
+        FillRect(hdc, &ps.rcPaint, (HBRUSH) (COLOR_WINDOW + 1));
+
+        EndPaint(hwnd, &ps);
+    }
+        return 0;
+    }
+    return DefWindowProc(hwnd, uMsg, wParam, lParam);
+}
+
+int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, int nCmdShow) {
+    // Register the window class
+    const wchar_t* CLASS_NAME = L"Sample Window Class";
+
+    WNDCLASS wc = { };
+    wc.lpfnWndProc = WindowProc;
+    wc.hInstance = hInstance;
+    wc.lpszClassName = CLASS_NAME;
+
+    RegisterClass(&wc);
+
+    // Create the window
+    HWND hwnd = CreateWindowEx(
+        0, // Optional window styles
+        CLASS_NAME, // Window class
+        L"Learn to Program Windows", // Window text
+        WS_OVERLAPPEDWINDOW, // Window style
+
+        // Size and position
+        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
+
+        NULL, // Parent window
+        NULL, // Menu
+        hInstance, // Instance handle
+        NULL // Additional application data
+    );
+
+    if (hwnd == NULL) {
+        printf("ERROR: hwnd was NULL\n");
+        return 0;
+    }
+
+    ShowWindow(hwnd, nCmdShow);
+
+    // Message loop
+
+    MSG msg = {};
+    while (GetMessage(&msg, NULL, 0, 0) > 0) {
+        TranslateMessage(&msg);
+        DispatchMessage(&msg);
+    }
+
+    return 0;
+}
+
+// #else
+//
+// int main() {
+//     _main();
+//     return 0;
+// }
+//
+// #endif