鼠标键盘消息学习笔记

#include <windows.h>
#include <stdio.h>
#define null    NULL


//窗口过程
LRESULT CALLBACK MyWindowProc
(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
    switch (Msg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    
    case WM_LBUTTONDOWN:
    {
        char str[64];
        sprintf(str,"鼠标左键按下：%d   %d\n",LOWORD(lParam),HIWORD(lParam));
        OutputDebugStringA(str);
        break;
    }
    case WM_LBUTTONUP:
    {
        char str[64];
        sprintf(str, "鼠标左键弹起：%d   %d\n", LOWORD(lParam), HIWORD(lParam));
        OutputDebugStringA(str);
        break;
    }
    case WM_MOUSEMOVE:
    {
        char str[64];
        sprintf(str, "鼠标移动：%d   %d\n", LOWORD(lParam), HIWORD(lParam));
        OutputDebugStringA(str);
        break;
    }
    case WM_LBUTTONDBLCLK:
    {
        char str[64];
        sprintf(str, "鼠标双击：%d   %d\n", LOWORD(lParam), HIWORD(lParam));
        OutputDebugStringA(str);
        break;
    }
    //键盘消息
    case WM_KEYDOWN:
    {
        char str[64];
        sprintf(str, "键盘按下：%x   %c\n", wParam, wParam);
        OutputDebugStringA(str);
        break;
    }
    case WM_CHAR:
    {
        char str[64];
        sprintf(str, "字符消息：%x   %c\n", wParam, wParam);
        OutputDebugStringA(str);
        break;
    }
    case WM_KEYUP:
    {
        char str[64];
        sprintf(str, "键盘弹起：%x   %c\n", wParam, wParam);
        OutputDebugStringA(str);
        break;
    }
    case WM_ERASEBKGND:
    {
        static int j = 0;
        char str1[64];
        sprintf(str1, "第%d次产生WM_ERASEBKGND!\n", j++);
        OutputDebugStringA(str1);            //在输出窗口打印信息
        return 1;
    }
        /*
    case WM_NCPAINT:
    {
        HDC hdc = GetWindowDC(hWnd);
        RECT r;
        r.left = 0;
        r.top = 0;
        r.right = 300;
        r.bottom = 30;
        HBRUSH brh = CreateSolidBrush(RGB(255, 0, 0));
        FillRect(hdc, &r, brh);
        TextOutA(hdc, 0, 0, "abcd", 0);
        DeleteObject(brh);
        ReleaseDC(hWnd, hdc);
        return 0;
    }   */
    case WM_PAINT:
    {
        PAINTSTRUCT ps;
        HDC hdc = BeginPaint(hWnd, &ps);
        static int i = 0;
        char str[64];
        sprintf(str, "第%d次产生WM_PAINT!\n", i++);
        OutputDebugStringA(str);            //在输出窗口打印信息

        EndPaint(hWnd, &ps);
        return 0;
        break;
    }

    }
    return DefWindowProc(hWnd, Msg, wParam, lParam);
}


int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
    LPSTR lpCmdLine, int nShowCmd)
{
    //注册窗口类
    WNDCLASS wnd;
    wnd.cbClsExtra = 0;
    wnd.cbWndExtra = 0;
    wnd.hbrBackground = (HBRUSH)(GetStockObject(GRAY_BRUSH));//背景色
    wnd.hCursor = LoadCursor(NULL, IDC_ARROW);//光标
    wnd.hIcon = LoadIcon(NULL, IDI_APPLICATION);//图标
    //wnd.lpfnWndProc = DefWindowProc;//窗口过程函数，用于处理消息
    wnd.lpfnWndProc = MyWindowProc;
    wnd.lpszClassName = L"MrVurtual";
    wnd.lpszMenuName = NULL;//菜单资源名称
    wnd.style = CS_HREDRAW | CS_DBLCLKS;//窗口类样式    如果不加CS_DBLCLKS，不会显示双击
    wnd.hInstance = hInstance;

    RegisterClass(&wnd);

    //创建窗口  WM_CREATE
    HWND hWnd = CreateWindow(L"MrVurtual", L"第一个窗口程序", WS_OVERLAPPEDWINDOW,
        100, 100, 300, 300, NULL, NULL, hInstance, NULL);
    //显示窗口
    ShowWindow(hWnd, nShowCmd);

    //更新窗口  WM_PAINT
    UpdateWindow(hWnd);

    //消息循环  收到WM_QUIT消息退出
    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);//翻译消息
        DispatchMessage(&msg);//分发消息到窗口过程
    }

    return 0;
}