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Код


#include <windows.h>
#include <stdio.h>
#include <stdlib.h>

#define WM_MAKEGUI WM_USER+111

HWND hButton10,hButton11;
MSG msg;
WNDCLASSEX wc;
HWND hWnd;
HWND hStatic0;

WNDPROC OldWndProcB10,OldWndProcB11;

LPCTSTR lpzClass=TEXT("My window class");/* Имя класса окна */

LRESULT CALLBACK WindowProc(HWND hwnd,UINT message,            \
                        WPARAM wParam,LPARAM lParam    \
                        )
{/* Обработчик сообщений главного окна */
    switch(message)
    {
        case WM_MAKEGUI:
        {
            char createsuccess[]="Creating interface success";
            ::SendMessage(hStatic0,WM_SETTEXT,0,(LPARAM)createsuccess);
            break;
        }
    case WM_DESTROY:
        {
            ::SendMessage(hWnd,WM_DESTROY,0,0);
            break;
        }
    default:
        return DefWindowProc(hwnd,message,wParam,lParam);
    }
    return 0;
}

LRESULT CALLBACK Button10Proc(HWND hwnd,UINT message,            \
                        WPARAM wParam,LPARAM lParam    \
                        )             
{/* Обработчик сообщений 10-ой кнопки */
    switch(message)
    {
    case WM_LBUTTONDOWN:
        {
            ::MessageBox(hwnd,"WM_LBUTTONDOWN","Button 10",MB_OK);
            break;
        }
    default:
        return OldWndProcB10(hwnd,message,wParam,lParam);
    }
    return 0;
}

LRESULT CALLBACK Button11Proc(HWND hwnd,UINT message,            \
                        WPARAM wParam,LPARAM lParam    \
                        )
{/* Обработчик сообщений 11-ой кнопки */
    switch(message)
    {
    case WM_LBUTTONUP:
        {
            ::MessageBox(hwnd,"Button","Button 11",MB_OK);
            break;
        }
    default:
        return OldWndProcB11(hwnd,message,wParam,lParam);
    }
    return 0;
}

int APIENTRY WinMain(HINSTANCE hInstance,                \
                 HINSTANCE hPrevInstance,        \
                 LPSTR lpCmdLine,                        \
                 int nCmdShow                                \
                 )
{
    wc.cbSize=sizeof(WNDCLASSEX);
    wc.style=CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc=(WNDPROC)WindowProc;
    wc.cbClsExtra=0;
    wc.cbWndExtra=0;
    wc.hInstance=hInstance;
    wc.hIcon=NULL;
    wc.hCursor=::LoadCursor(0,IDC_ARROW);
    wc.hbrBackground=(HBRUSH)COLOR_WINDOW;
    wc.lpszMenuName=NULL;
    wc.lpszClassName=lpzClass;
    ::RegisterClassEx(&wc);

    /* Создаём главное окно приложения на основе
         зарегистрированного класса окна wc */
    hWnd=::CreateWindowEx(0,lpzClass,"WinAPI program",            \
                        WS_OVERLAPPEDWINDOW | WS_VISIBLE,    \
                        10,10,370,100,                                        \
                        0,0,NULL,NULL                                \
                        );
    hStatic0=::CreateWindowEx(WS_EX_APPWINDOW,                \
                        "Static","---",                    \
                        WS_CHILD | WS_VISIBLE,    \
                        5,5,360,20,                            \
                        hWnd,0,NULL,NULL                \
                        );
    hButton10=::CreateWindowEx(WS_EX_STATICEDGE,            \
                             "Button","Button 10",    \
                             WS_CHILD | WS_VISIBLE,    \
                             180,25,180,35,                    \
                             hWnd,0,NULL,NULL                \
                             );
    OldWndProcB10=(WNDPROC)::SetWindowLong(hButton10,GWL_WNDPROC,    \
                                         (LONG)Button10Proc            \
                                         );
    hButton11=::CreateWindowEx(WS_EX_STATICEDGE,                \
                             "Button","Button 11",        \
                             WS_CHILD | WS_VISIBLE,        \
                             5,25,180,35,                            \
                             hWnd,0,NULL,NULL        \
                             );
    /* Переустанавливаем обработчик сообщений */
    OldWndProcB11=(WNDPROC)::SetWindowLong(hButton11,GWL_WNDPROC,    \
                                         (LONG)Button11Proc            \
                                         );

    ::ShowWindow(hWnd,SW_SHOWNORMAL);
    ::UpdateWindow(hWnd);
    ::SendMessage(hWnd,WM_MAKEGUI,0,0);

    /* Цикл выборки сообщений */
    int iGetOK;
    while((iGetOK=::GetMessage(&msg,NULL,0,0)))
    {
        if(iGetOK == -1)
        { printf("Error code is %li\n",::GetLastError()); return 1; }
        ::TranslateMessage(&msg);
        ::DispatchMessage(&msg);
    }
    return msg.wParam;
}