C++窗口程序建议！！！

你在生活中应该看到过很多的窗口程序

然后，我今天就给大家简单的做一下有关于窗口程序的感受吧

其实

窗口程序的话C++比较适合Qt这种简单的

毕竟如果你用API的话代码会比较长

我之前刚开始了解的时候看到这么长串的代码

当场就蒙住了，毕竟众所周知C++是靠记出来的(doge)

我现在说这话你们可能还不信

那我给你们比较下你们应该就可以明显的看出来了

首先是Qt的：

#include <iostream>
#include <QApplication>
#include <QWidget>

using namespace std;

int main(int argc, char *argv[]) {
    //创建Application对象
    QApplication app(argc, argv);
    //创建窗口
    QWidget w;
    //展示窗口
    w.show();

    //等待窗口关闭,程序结束
    return QApplication::exec();
}

而API的则是

#include <windows.h>

/* This is where all the input to the window goes to */
LRESULT CALLBACK WndProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam) {
    switch(Message) {
        
        /* Upon destruction, tell the main thread to stop */
        case WM_DESTROY: {
            PostQuitMessage(0);
            break;
        }
        
        /* All other messages (a lot of them) are processed using default procedures */
        default:
            return DefWindowProc(hwnd, Message, wParam, lParam);
    }
    return 0;
}

/* The 'main' function of Win32 GUI programs: this is where execution starts */
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
    WNDCLASSEX wc; /* A properties struct of our window */
    HWND hwnd; /* A 'HANDLE', hence the H, or a pointer to our window */
    MSG msg; /* A temporary location for all messages */

    /* zero out the struct and set the stuff we want to modify */
    memset(&wc,0,sizeof(wc));
    wc.cbSize         = sizeof(WNDCLASSEX);
    wc.lpfnWndProc     = WndProc; /* This is where we will send messages to */
    wc.hInstance     = hInstance;
    wc.hCursor         = LoadCursor(NULL, IDC_ARROW);
    
    /* White, COLOR_WINDOW is just a #define for a system color, try Ctrl+Clicking it */
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wc.lpszClassName = "WindowClass";
    wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION); /* Load a standard icon */
    wc.hIconSm         = LoadIcon(NULL, IDI_APPLICATION); /* use the name "A" to use the project icon */

    if(!RegisterClassEx(&wc)) {
        MessageBox(NULL, "Window Registration Failed!","Error!",MB_ICONEXCLAMATION|MB_OK);
        return 0;
    }

    hwnd = CreateWindowEx(WS_EX_CLIENTEDGE,"WindowClass","Caption",WS_VISIBLE|WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, /* x */
        CW_USEDEFAULT, /* y */
        640, /* width */
        480, /* height */
        NULL,NULL,hInstance,NULL);

    if(hwnd == NULL) {
        MessageBox(NULL, "Window Creation Failed!","Error!",MB_ICONEXCLAMATION|MB_OK);
        return 0;
    }

    /*
        This is the heart of our program where all input is processed and 
        sent to WndProc. Note that GetMessage blocks code flow until it receives something, so
        this loop will not produce unreasonably high CPU usage
    */
    while(GetMessage(&msg, NULL, 0, 0) > 0) { /* If no error is received... */
        TranslateMessage(&msg); /* Translate key codes to chars if present */
        DispatchMessage(&msg); /* Send it to WndProc */
    }
    return msg.wParam;
}

懂了吧这很明显了

好了水完了，再见(doge)