win32_minimal.cpp

#include "Winning.h"
#include <sstream>

LRESULT CALLBACK WindowProc(
    _In_ HWND hwnd,
    _In_ UINT msg,
    _In_ WPARAM wparam,
    _In_ LPARAM lparam)
{
    switch (msg) {
        case WM_CLOSE: {
            PostQuitMessage(0);
            break;
        } case WM_KEYDOWN: {
            bool repeat = lparam & 0x40000000;
            switch (wparam) {
                case VK_SPACE: {
                    if (repeat) {
                        OutputDebugString(L"Space repeat\n");
                    } else {
                        OutputDebugString(L"Space pressed\n");
                    }
                    break;
                }
            }
            break;
        } case WM_KEYUP: {
            switch (wparam) {
                case VK_SPACE: {
                    OutputDebugString(L"Space released\n");
                    break;
                }
            }
            break;
        } case WM_CHAR: {
            char c = (char)wparam;
            break;
        } case WM_LBUTTONDOWN: {
            POINTS *p = (POINTS *)&lparam;
            std::wostringstream oss;
            oss << "LMB pressed @ x: " << p->x << ", y: " << p->y << "\n";
            OutputDebugString(oss.str().c_str());
            break;
        } case WM_LBUTTONUP: {
            POINTS *p = (POINTS *)&lparam;
            std::wostringstream oss;
            oss << "LMB released @ x: " << p->x << ", y: " << p->y << "\n";
            OutputDebugString(oss.str().c_str());
            break;
        }
    }
    return DefWindowProc(hwnd, msg, wparam, lparam);
}

HWND create_window(HINSTANCE hinstance, const WCHAR *title, int width, int height)
{
    static WNDCLASSEX wc = { 0 };
    if (!wc.cbSize) {
        wc.cbSize = sizeof(wc);
        wc.style = CS_OWNDC;
        wc.lpfnWndProc = WindowProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = hinstance;
        wc.hIcon = nullptr;
        wc.hCursor = nullptr;
        wc.hbrBackground = nullptr;
        wc.lpszMenuName = nullptr;
        wc.lpszClassName = L"MainWindow";
        wc.hIconSm = nullptr;
        RegisterClassEx(&wc);
    }

    RECT rect;
    rect.left = (1920 - width) / 2;
    rect.top = (1080 - height) / 2;
    rect.right = width + rect.left;
    rect.bottom = height + rect.top;

    DWORD style = WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU;
    AdjustWindowRect(&rect, style, FALSE);

    HWND hwnd = CreateWindowEx(0, wc.lpszClassName, title, style, rect.left,
        rect.top, width, height, nullptr, nullptr, hinstance, nullptr);
    return hwnd;
}

int CALLBACK WinMain (
    _In_ HINSTANCE hinstance,
    _In_opt_ HINSTANCE hprevinstance,
    _In_ LPSTR cmdline,
    _In_ int showcmd)
{
    HWND hwnd = create_window(hinstance, L"Title", 1600, 900);
    ShowWindow(hwnd, SW_SHOW);

    MSG msg = { 0 };
    BOOL result;
    while (result = GetMessage(&msg, nullptr, 0, 0) > 0) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    DestroyWindow(hwnd);
    return result ? result : (int)msg.wParam;
}