pushwin.c

开放源码的编译器open watcom 1.6.0版的源代码

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  Push window class.
*
****************************************************************************/


#include <windows.h>
#include <string.h>
#include "mem.h"
#include "pushwin.h"

BOOL __export FAR PASCAL PushWinProc( HWND hwnd, WORD msg, WORD wparam,
                                    DWORD lparam )
{
    PushWinInfo         *info;
    PAINTSTRUCT         paint;
    HFONT               old_font;
    RECT                area;

    info = (PushWinInfo *)GetWindowLong( hwnd, 0 );
    switch( msg ) {
    case WM_CREATE:
        info = (PushWinInfo *)( ( (CREATESTRUCT *)lparam )->lpCreateParams );
        SetWindowLong( hwnd, 0, (DWORD) info );
        break;
    case WM_PAINT:
        BeginPaint( hwnd, &paint );
        old_font = SelectObject( paint.hdc, info->font );
        GetWindowRect( hwnd, &area );
        area.bottom -= area.top;
        area.top = 0;
        area.right -= area.left;
        area.left = 0;
        DrawText( paint.hdc, info->str, -1, &area, DT_LEFT );
        SelectObject( paint.hdc, old_font );
        EndPaint( hwnd, &paint );
        break;
    case WM_LBUTTONDOWN:
        SendMessage( info->parent, WM_COMMAND, info->id, 0L );
        break;
    case WM_DESTROY:
        MemFree( info );
        break;
    default:
        return( DefWindowProc( hwnd, msg, wparam, lparam ) );
    }
    return( TRUE );
}

BOOL RegPushWin( HANDLE instance ) {

    WNDCLASS    wc;

    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc = (LPVOID)PushWinProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 4;
    wc.hInstance = instance;
    wc.hIcon = NULL;
    wc.hCursor = LoadCursor( NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
    wc.lpszMenuName = NULL;
    wc.lpszClassName = "PushWin";
    if( !RegisterClass( &wc ) ) return( FALSE );
    return( TRUE );
}

HWND CreatePushWin( HWND parent, char *txt, WORD id, HFONT font, HANDLE inst )
{

    HWND                hwnd;
    PushWinInfo         *info;
    WORD                len;

    len = strlen( txt ) + 1;
    info = MemAlloc( sizeof( PushWinInfo ) + len );
    info->id = id;
    info->font = font;
    info->parent = parent;
    strcpy( info->str, txt );
    hwnd = CreateWindow(
        "PushWin",              /* Window class name */
        "",                     /* Window caption */
        WS_CHILD,               /* Window style */
        0,                      /* Initial X position */
        0,                      /* Initial Y position */
        0,                      /* Initial X size */
        0,                      /* Initial Y size */
        parent,                 /* Parent window handle */
        NULL,                   /* Window menu handle */
        inst,                   /* Program instance handle */
        info );                 /* Create parameters */
    return( hwnd );
}