天下

#include <windows.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>

#define _ATL_CSTRING_EXPLICIT_CONSTRUCTORS      // some CString constructors will be explicit

#include <atlbase.h>
#include <atlstr.h>

#define MAX_LOADSTRING 100

HINSTANCE hInst;                                // current instance
TCHAR szTitle[MAX_LOADSTRING] = "Test Windows Message";                    // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING] = "MyTestWindows";            // the main window class name

HWND main_hWnd;
HWND btn_hwnd;
DWORD btn_style = WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON|WS_CHILD;
int times = 0;
// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);

#define MY_BUTTON_ID (1001)


int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    
    MSG msg;

    MyRegisterClass(hInstance);

    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    while (GetMessage(&msg, NULL, 0, 0))
    {
        if (msg.hwnd == main_hWnd)
        {
            ATLTRACE("%04u,[Loop Main]MSG:0x%04X,HWND:0x%06x \r\n",times++,msg.message,msg.hwnd);
        }
        if (msg.hwnd==btn_hwnd)
        {
            ATLTRACE("%04u,[Loop Button]MSG:0x%04X,HWND:0x%06x \r\n",times++,msg.message,msg.hwnd);
        }
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return (int) msg.wParam;
}



ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEX wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style            = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra        = 0;
    wcex.cbWndExtra        = 0;
    wcex.hInstance        = hInstance;
    //wcex.hIcon            = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WIN05));
    wcex.hIcon            = NULL;
    wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);
    wcex.hbrBackground    = (HBRUSH)(COLOR_WINDOW+1);
    //wcex.lpszMenuName    = MAKEINTRESOURCE(IDC_WIN05);
    wcex.lpszMenuName    = NULL;
    wcex.lpszClassName    = szWindowClass;
    //wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
    wcex.hIconSm        = NULL;

    return RegisterClassEx(&wcex);
}

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{


   hInst = hInstance; 

   main_hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, 300, 200, NULL, NULL, hInstance, NULL);

   if (!main_hWnd)
   {
      return FALSE;
   }

   ShowWindow(main_hWnd, nCmdShow);
   UpdateWindow(main_hWnd);

   return TRUE;
}


LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    int wmId, wmEvent;
    PAINTSTRUCT ps;
    HDC hdc;

    ATLTRACE("%04u,[Main WndProc]MSG:0x%04X,HWND:0x%06x \r\n",times++,message,hWnd);
    switch (message)
    {
    case WM_CREATE:
        {
            //ATLTRACE("Main HWND:0x%06x \r\n",main_hWnd);
            //ATLTRACE("WndProc HWND:0x%06x \r\n",hWnd);
            btn_hwnd = CreateWindowEx(0,"BUTTON","My button",btn_style,10,10,100,50,hWnd,(HMENU)(UINT_PTR)MY_BUTTON_ID,hInst,NULL);
            //ATLTRACE("Button HWND:0x%06x \r\n",btn_hwnd);
        }

        break;
    case WM_COMMAND:
        wmId    = LOWORD(wParam);
        wmEvent = HIWORD(wParam);
        // Parse the menu selections:
        switch (wmId)
        {
        case 1001:
            
            //MessageBox(hWnd,"abc","bcd",MB_OK);
            break;
        default:
            return DefWindowProc(hWnd, message, wParam, lParam);
        }
        break;
    case WM_PAINT:
        hdc = BeginPaint(hWnd, &ps);
        EndPaint(hWnd, &ps);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}