#include <stdio.h>#include <stdlib.h>#include <time.h>#include <string.h>#include <sys/time.h>#include <pthread.h>#include <semaphore.h>#include <sys/types.h>#include <sys/wait.h>#include <unistd.h>#include <minigui/common.h>#include <minigui/minigui.h>#include <minigui/gdi.h>#include <minigui/window.h>#include <minigui/control.h>static HWND hMainWnd = HWND_INVALID;#define IDC_CTRL1     100#define IDC_CTRL2     110static int ControlTestWinProc(HWND hWnd, int message, WPARAM wParam, LPARAM lParam){    static HWND hChildWnd1, hChildWnd2;    MENUBUTTONITEM mbi;    switch (message) {        case MSG_CREATE:            hChildWnd1 = CreateWindow ("menubutton",                                         "<MenuBtn>",                                         WS_CHILD                                         | WS_VISIBLE,                                         IDC_CTRL1,                                         10, 20, 80, 24, hWnd, 0);            hChildWnd2 = CreateWindow ("button",                                         "Cancel",                                         WS_CHILD                                        | BS_PUSHBUTTON                                        | WS_VISIBLE,                                         IDC_CTRL2,                                         100, 20, 60, 24, hWnd, 0);            mbi.text = "item one";            mbi.bmp = NULL;            mbi.data = 0;            SendMessage (hChildWnd1, MBM_ADDITEM, -1, (LPARAM) &mbi);            mbi.text = "item two";            SendMessage (hChildWnd1, MBM_ADDITEM, -1, (LPARAM) &mbi);            mbi.text = "item three";            SendMessage (hChildWnd1, MBM_ADDITEM, -1, (LPARAM) &mbi);            mbi.text = "item four";            SendMessage (hChildWnd1, MBM_ADDITEM, -1, (LPARAM) &mbi);        break;        case MSG_COMMAND:        {            int id   = LOWORD(wParam);            switch (id) {            case IDC_CTRL1:            break;                        case IDC_CTRL2:                PostMessage (hWnd, MSG_CLOSE, 0, 0);            break;                            default:            break;            }        }        break;               case MSG_CLOSE:            DestroyWindow (hChildWnd1);            DestroyWindow (hChildWnd2);            DestroyMainWindow (hWnd);            MainWindowCleanup (hWnd);            hMainWnd = HWND_INVALID;        return 0;    }    return DefaultMainWinProc(hWnd, message, wParam, lParam);}static void InitCreateInfo(PMAINWINCREATE pCreateInfo){    pCreateInfo->dwStyle = WS_CAPTION | WS_BORDER | WS_MINIMIZEBOX                                       | WS_MAXIMIZEBOX                                      | WS_VISIBLE;    pCreateInfo->dwExStyle = WS_EX_NONE;    pCreateInfo->spCaption = "MenuButton control" ;    pCreateInfo->hMenu = 0;    pCreateInfo->hCursor = GetSystemCursor(1);    pCreateInfo->hIcon = 0;    pCreateInfo->MainWindowProc = ControlTestWinProc;    pCreateInfo->lx = 0;     pCreateInfo->ty = 0;    pCreateInfo->rx = 400;    pCreateInfo->by = 300;    pCreateInfo->iBkColor = GetWindowElementColor (BKC_CONTROL_DEF);    pCreateInfo->dwAddData = 0;    pCreateInfo->hHosting = HWND_DESKTOP;}void menubutton_demo (HWND hwnd){    MAINWINCREATE CreateInfo;    if (hMainWnd != HWND_INVALID) {        ShowWindow (hMainWnd, SW_SHOWNORMAL);        return;    }    InitCreateInfo (&CreateInfo);    CreateInfo.hHosting = hwnd;    hMainWnd = CreateMainWindow (&CreateInfo);}