/*** $Id: trackbar.c,v 1.6.4.1 2006/06/16 01:01:45 xwyan Exp $**** trackbar.c: The TrackBar control demo program.**** Copyright (C) 2001 ~ 2002 Wei Yongming.** Copyright (C) 2003 ~ 2006 Feynman Software.**** Create date: 2001/11/01*//***  This source is free software; you can redistribute it and/or**  modify it under the terms of the GNU General Public**  License as published by the Free Software Foundation; either**  version 2 of the License, or (at your option) any later version.****  This software is distributed in the hope that it will be useful,**  but WITHOUT ANY WARRANTY; without even the implied warranty of**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU**  General Public License for more details.****  You should have received a copy of the GNU General Public**  License along with this library; if not, write to the Free**  Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,**  MA 02111-1307, USA*/#include <stdio.h>#include <stdlib.h>#include <string.h>#include <minigui/common.h>#include <minigui/minigui.h>#include <minigui/gdi.h>#include <minigui/window.h>#include <minigui/control.h>#define IDC_TRACKBAR1     100#define IDC_TRACKBAR2     101static HWND hMainWnd = HWND_INVALID;static HWND hTrackWnd1, hTrackWnd2, hShowWnd;static int MaxLength = 1000;static int CurrentPos = 0;static char CurPosBuffer[16];static void TrackbarChanged(int code, HWND ctrl){	switch (code)	{	    case TBN_REACHMAX:	    	CurrentPos = MaxLength;	    	sprintf(CurPosBuffer, "%d", CurrentPos);            SendMessage (hShowWnd,  MSG_SETTEXT, 0, (LPARAM)CurPosBuffer);	    break;	    case TBN_REACHMIN:	    	CurrentPos = 0;	    	sprintf(CurPosBuffer, "%d", CurrentPos);            SendMessage (hShowWnd,  MSG_SETTEXT, 0, (LPARAM)CurPosBuffer);	    break;	    case TBN_CHANGE:	    	CurrentPos = SendMessage (hTrackWnd1, TBM_GETPOS, 0, 0);	    	sprintf(CurPosBuffer, "%d", CurrentPos);            SendMessage (hShowWnd,  MSG_SETTEXT, 0, (LPARAM)CurPosBuffer);	    break;	    default:	    break;	}}static int ControlTestWinProc(HWND hWnd, int message, WPARAM wParam, LPARAM lParam){    switch (message) {        case MSG_CREATE:            hShowWnd = CreateWindow (CTRL_STATIC,                               "",                               WS_VISIBLE,                               IDC_STATIC,                               10, 20, 60, 20, hWnd, 0);            hTrackWnd1 = CreateWindow (CTRL_TRACKBAR,                               "",                               WS_VISIBLE | TBS_NOTIFY,                               IDC_TRACKBAR1,                               10, 40, 180, 50, hWnd, 0);            SendMessage (hTrackWnd1, TBM_SETRANGE, 0, 1000);            SendMessage (hTrackWnd1, TBM_SETLINESIZE, 1, 0);            SendMessage (hTrackWnd1, TBM_SETPAGESIZE, 10, 0);            SendMessage (hTrackWnd1, TBM_SETTICKFREQ, 1000, 0);            hTrackWnd2 = CreateWindow (CTRL_TRACKBAR,                               "",                               WS_VISIBLE | TBS_NOTIFY | TBS_TIP,                               IDC_TRACKBAR1 + 1,                               200, 40, 180, 50, hWnd, 0);            SendMessage (hTrackWnd2, TBM_SETTIP, (WPARAM)"Min", (LPARAM)"Max");            hTrackWnd2 = CreateWindow (CTRL_TRACKBAR,                               "",                               WS_VISIBLE | TBS_NOTIFY | TBS_VERTICAL,                               IDC_TRACKBAR1 + 2,                               10, 100, 50, 200, hWnd, 0);            CreateWindow (CTRL_TRACKBAR,                               "",                               WS_VISIBLE | TBS_NOTIFY | TBS_VERTICAL | TBS_NOTICK,                               IDC_TRACKBAR1 + 3,                               60, 100, 50, 200, hWnd, 0);            SendMessage (hTrackWnd2, TBM_SETRANGE, 0, 10000);            SendMessage (hTrackWnd2, TBM_SETLINESIZE, 1, 0);            SendMessage (hTrackWnd2, TBM_SETPAGESIZE, 10, 0);            SendMessage (hTrackWnd2, TBM_SETTICKFREQ, 10000, 0);            CurrentPos = 0;            sprintf (CurPosBuffer, "%d", CurrentPos);            SendMessage (hShowWnd,  MSG_SETTEXT, 0, (LPARAM)CurPosBuffer);        break;        case MSG_COMMAND:        {            int id   = LOWORD(wParam);            int code = HIWORD(wParam);            HWND ctrl = (HWND)(lParam);            char buffer [256];            HDC hdc;            sprintf (buffer, "ID: %d, Code: %x", id, code);            hdc = GetClientDC (hWnd);            TextOut (hdc, 0, 0, buffer);            ReleaseDC (hdc);            if (id == IDC_TRACKBAR1)                TrackbarChanged(code, ctrl);        }        break;	case MSG_DESTROY:            DestroyAllControls (hWnd);            hMainWnd = HWND_INVALID;	    return 0;        case MSG_CLOSE:            DestroyMainWindow (hWnd);            MainWindowCleanup (hWnd);            return 0;        default:            break;    }    return DefaultMainWinProc(hWnd, message, wParam, lParam);}static void InitCreateInfo(PMAINWINCREATE pCreateInfo){    pCreateInfo->dwStyle = WS_CAPTION | WS_BORDER | WS_VISIBLE;    pCreateInfo->dwExStyle = WS_EX_NONE;    pCreateInfo->spCaption = "TrackBar controls" ;    pCreateInfo->hMenu = 0;    pCreateInfo->hCursor = GetSystemCursor(IDC_ARROW);    pCreateInfo->hIcon = 0;    pCreateInfo->MainWindowProc = ControlTestWinProc;    pCreateInfo->lx = 0;     pCreateInfo->ty = 0;    pCreateInfo->rx = 460;    pCreateInfo->by = 380;    pCreateInfo->iBkColor = GetWindowElementColor (BKC_CONTROL_DEF);    pCreateInfo->dwAddData = 0;    pCreateInfo->dwReserved = 0;    pCreateInfo->hHosting = HWND_DESKTOP;}void trackbar_demo (HWND hwnd){    MAINWINCREATE CreateInfo;    if (hMainWnd != HWND_INVALID) {        ShowWindow (hMainWnd, SW_SHOWNORMAL);        return;    }    InitCreateInfo (&CreateInfo);    CreateInfo.hHosting = hwnd;    hMainWnd = CreateMainWindow (&CreateInfo);}