subclass.c

MINI GUI1.6X源码

/*
** $Id: subclass.c,v 1.5 2003/06/06 10:10:47 weiym Exp $
**
** subclass.c:
**  This program demostrates the technology of sub-class in MiniGUI
**
** Copyright (C) 2001 ~ 2002 Wei Yongming.
** Copyright (C) 2003 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_CTRL1     100
#define IDC_CTRL2     110
#define IDC_CTRL3     120
#define IDC_CTRL4     130

#define MY_ES_DIGIT_ONLY    0x0001
#define MY_ES_ALPHA_ONLY    0x0002

static HWND hMainWnd = HWND_INVALID;

static WNDPROC old_edit_proc;

static int RestrictedEditBox (HWND hwnd, int message, WPARAM wParam, LPARAM lParam)
{
    if (message == MSG_CHAR) {
        DWORD my_style = GetWindowAdditionalData (hwnd);
        if ((my_style & MY_ES_DIGIT_ONLY) && (wParam < '0' || wParam > '9'))
            return 0;
        else if (my_style & MY_ES_ALPHA_ONLY)
            if (!((wParam >= 'A' && wParam <= 'Z') || (wParam >= 'a' && wParam <= 'z')))
                return 0;
    }

    return (*old_edit_proc) (hwnd, message, wParam, lParam);
}

static int ControlTestWinProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
{
    switch (message) {
    case MSG_CREATE:
    {
        HWND hWnd1, hWnd2, hWnd3;

        CreateWindow (CTRL_STATIC, "Digit-only box:", WS_CHILD | WS_VISIBLE | SS_RIGHT, 0, 
                    10, 10, 180, 24, hWnd, 0);
        hWnd1 = CreateWindow (CTRL_EDIT, "", WS_CHILD | WS_VISIBLE | WS_BORDER, IDC_CTRL1, 
                    200, 10, 180, 24, hWnd, MY_ES_DIGIT_ONLY);
        CreateWindow (CTRL_STATIC, "Alpha-only box:", WS_CHILD | WS_VISIBLE | SS_RIGHT, 0, 
                    10, 40, 180, 24, hWnd, 0);
        hWnd2 = CreateWindow (CTRL_EDIT, "", WS_CHILD | WS_BORDER | WS_VISIBLE, IDC_CTRL2, 
                    200, 40, 180, 24, hWnd, MY_ES_ALPHA_ONLY);
        CreateWindow (CTRL_STATIC, "Normal edit box:", WS_CHILD | WS_VISIBLE | SS_RIGHT, 0, 
                    10, 70, 180, 24, hWnd, 0);
        hWnd3 = CreateWindow (CTRL_EDIT, "", WS_CHILD | WS_BORDER | WS_VISIBLE, IDC_CTRL2, 
                    200, 70, 180, 24, hWnd, MY_ES_ALPHA_ONLY);

        CreateWindow ("button", "Close", WS_CHILD | BS_PUSHBUTTON | WS_VISIBLE, IDC_CTRL4, 
                    100, 100, 60, 24, hWnd, 0);

        old_edit_proc = SetWindowCallbackProc (hWnd1, RestrictedEditBox);
        SetWindowCallbackProc (hWnd2, RestrictedEditBox);
        break;
    }

    case MSG_COMMAND:
    {
        int id   = LOWORD(wParam);
        switch (id) {
        case IDC_CTRL4:
            PostMessage (hWnd, MSG_CLOSE, 0, 0);
            break;
        }
    }
    break;

    case MSG_DESTROY:
        DestroyAllControls (hWnd);
        hMainWnd = HWND_INVALID;
	return 0;
        
    case MSG_CLOSE:
        DestroyMainWindow (hWnd);
        MainWindowCleanup (hWnd);
        return 0;
    }

    return DefaultMainWinProc (hWnd, message, wParam, lParam);
}

static void InitCreateInfo(PMAINWINCREATE pCreateInfo)
{
    pCreateInfo->dwStyle = WS_CAPTION | WS_BORDER | WS_VISIBLE;
    pCreateInfo->dwExStyle = WS_EX_IMECOMPOSE;
    pCreateInfo->spCaption = "Subclass of Control";
    pCreateInfo->hMenu = 0;
    pCreateInfo->hCursor = GetSystemCursor(0);
    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 subclass_demo (HWND hwnd)
{
    MAINWINCREATE CreateInfo;

    if (hMainWnd != HWND_INVALID) {
        ShowWindow (hMainWnd, SW_SHOWNORMAL);
        return;
    }

    InitCreateInfo (&CreateInfo);
    CreateInfo.hHosting = hwnd;

    hMainWnd = CreateMainWindow (&CreateInfo);
}