[Win32]系列1

1.入口函数WinMain

 

#include <windows.h>

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
    LPSTR lpCmdLine, int nCmdShow)
{
    MessageBox(NULL, TEXT("一个最简单的Win32程序!"), TEXT("Win32程序"), MB_OK);
    return 0;
}

WINAPI，APIENTRY,PASCAL等价的，

#define WINAPI __stdcall

调用约定，压栈方式等。

2.创建窗口

 

#include <windows.h>

LRESULT CALLBACK WinProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInst,HINSTANCE hPrevInst,LPSTR lpCmdLine,int nShowCmd)
{
    WNDCLASSEX wClass;
    ZeroMemory(&wClass,sizeof(WNDCLASSEX));
    wClass.cbClsExtra=NULL;
    wClass.cbSize=sizeof(WNDCLASSEX);
    wClass.cbWndExtra=NULL;
    wClass.hbrBackground=(HBRUSH)COLOR_WINDOW;
    wClass.hCursor=LoadCursor(NULL,IDC_ARROW);
    wClass.hIcon=NULL;
    wClass.hIconSm=NULL;
    wClass.hInstance=hInst;
    wClass.lpfnWndProc=(WNDPROC)WinProc;
    wClass.lpszClassName=TEXT("窗口类名");
    wClass.lpszMenuName=NULL;
    wClass.style=CS_HREDRAW|CS_VREDRAW;

    if(!RegisterClassEx(&wClass))
    {
        int nResult=GetLastError();
        MessageBox(NULL,
            TEXT("注册窗口类失败."),
            TEXT("失败"),
            MB_ICONERROR);
    }

    HWND hWnd=CreateWindowEx(NULL,
            TEXT("窗口类名"),
            TEXT("win32应用程序"),
            WS_OVERLAPPEDWINDOW,
            200,
            200,
            640,
            480,
            NULL,
            NULL,
            hInst,
            NULL);

    if(!hWnd)
    {
        int nResult=GetLastError();

        MessageBox(NULL,
            TEXT("窗口创建失败."),
            TEXT("失败"),
            MB_ICONERROR);
    }

    ShowWindow(hWnd,nShowCmd);

    MSG msg;
    ZeroMemory(&msg,sizeof(MSG));/*清零*/

    while(GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}

LRESULT CALLBACK WinProc(HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
    switch(msg)
    {
        case WM_DESTROY:
        {
            PostQuitMessage(0);
            return 0;
        }
        break;
    }

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

基本套路，可以把这个存个模版。