switch 中 return和break的区别?解决办法

switch 中 return和break的区别?
//下面代码中把switch中的return语句换成break语句有什么区别吗？我搞不懂他们之间的区别了，希望能解析下

C/C++ code

#include<windows.h>
#include"resource.h"

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
    static TCHAR szAppName[]  = TEXT("lige");

    HWND    hwnd;
    MSG     msg;

    WNDCLASS wndclass;

    wndclass.cbClsExtra       = 0;
    wndclass.cbWndExtra       = 0;
    wndclass.hbrBackground    = (HBRUSH)GetStockObject(BLACK_BRUSH);
    wndclass.hCursor          = LoadCursor(NULL,IDC_ARROW);
    wndclass.hIcon            = LoadIcon(hInstance,MAKEINTRESOURCE(IDI_ICON1));
    wndclass.hInstance        = hInstance;
    wndclass.lpfnWndProc      = WndProc;
    wndclass.lpszClassName    = szAppName;
    wndclass.lpszMenuName     = MAKEINTRESOURCE(IDR_MENU1);
    wndclass.style            = CS_HREDRAW | CS_VREDRAW;

    if (!RegisterClass(&wndclass))
    {
        MessageBox(NULL,TEXT("注册窗口类失败！"),TEXT("失败"),MB_OK | MB_ICONERROR);
        return 0;
    }

    hwnd = CreateWindow( szAppName,
                         TEXT("测试程序"),
                         WS_OVERLAPPEDWINDOW,
                         CW_USEDEFAULT,
                         CW_USEDEFAULT,
                         CW_USEDEFAULT,
                         CW_USEDEFAULT,
                         NULL,
                         NULL,
                         hInstance,
                         NULL );

    ShowWindow(hwnd,SW_SHOWNORMAL);
    UpdateWindow(hwnd);
 
    while (GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam;
}


LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC     hdc;
    PAINTSTRUCT ps;

    switch (message)
    {
    case WM_CREATE:
        return 0;

    case WM_COMMAND:
        switch (LOWORD(wParam))
        {
        case IDM_OPEN:
            return 0;

        case IDM_CLOSE:
            SendMessage(hwnd,WM_CLOSE,0,0);
            return 0;
        }

    case WM_PAINT:
        hdc = BeginPaint(hwnd,&ps);
        EndPaint(hwnd,&ps);
        return 0;

    case WM_CLOSE:
        if (IDYES == MessageBox(NULL,TEXT("是否要退出？"),TEXT("退出"),MB_YESNO))
        {
            DestroyWindow(hwnd);
        }
        return 0;

    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}

------解决方案--------------------
break 跳出最近一层的嵌套
return 函数返回（如果有的话有返回值的返回结果）。
------解决方案--------------------
return函数就直接返回了。break只是跳到switch的外面，继续执行后面的代码。
这里，break还会再执行return DefWindowProc(hwnd, message, wParam, lParam);
这句，而return 的话，就不执行了。
------解决方案--------------------
return函数就直接返回了。break只是跳到switch的外面，继续执行后面的代码。
这里，break还会再执行return DefWindowProc(hwnd, message, wParam, lParam);
这句，而return 的话，就不执行了。

switch 中 return和break的区别?解决办法

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