campo-sirio/al/examples/ex17win.cpp

//
// EX17WIN.CPP
//
//  C++/Windows Example program for ArchiveLib 2.0
//
//  Copyright (c) Greenleaf Software, Inc. 1994 - 1996
//  All Rights Reserved
//
// MEMBERS/FUNCTIONS DEMONSTRATED
//
//   ALEntryList::FillListBox()
//   ALEntryList::UnmarkDuplicates()
//
// DESCRIPTION
//
// This program demonstrates a few of the ALEntryList manipulation
// functions.  It lets you create a list, delete duplicates, and
// delete a list.
//
// REVISION HISTORY
//
//  February 1, 1996  2.0A  : Second release
//
//

#define STRICT
#include <windows.h>
#include <stdarg.h>

#include "al.h"
#include "ex17win.h"

HINSTANCE hInstance;
HWND hDlgMain;
ALEntryList *pList = 0;

BOOL AL_EXPORT CALLBACK AboutDialogProc( HWND, UINT, WPARAM, LPARAM );
void SizeFramingWindow( HWND hDlg );
void MakeList( HWND hDlg );
void DeleteList( HWND hDlg );
void DeleteDuplicates( HWND hDlg );

//
// In this program, we have a main window, but it is just a dummy framing
// window for the dialog box.  This dialog box is where all the action
// takes place.  It handles input keystrokes and button presses from the
// dialog.
//
BOOL AL_EXPORT CALLBACK MainDialogProc( HWND hDlg,
                                        UINT message,
                                        WPARAM wParam,
                                        LPARAM )
{
    switch ( message ) {
//
// At initialization time, we just initialize the title bar, the input
// text box, and center/size the main window.
//
        case WM_INITDIALOG :
            SizeFramingWindow( hDlg );
            SetWindowText( hDlg, "Windows Example 17" );
            SetDlgItemText( hDlg, AL_DIR_MASK, "*.LIB, AL*.*" );
            return( TRUE );
//
// Most of the activity in this program takes place in response to button
// presses in the dialog.  Those come through as WM_COMMAND messages,
// and are handled right here.
//
        case WM_COMMAND :
            switch ( wParam ) {
                case AL_ABOUT : {
                        FARPROC lpfnAboutDlgProc = MakeProcInstance(
                                     (FARPROC) AboutDialogProc,
                                     hInstance );
                        DialogBox( hInstance,
                                   "ALAboutDialog",
                                   0,
                                   (DLGPROC) lpfnAboutDlgProc );
                        (void) FreeProcInstance( lpfnAboutDlgProc );
                    }
                    return TRUE;
//
// These are the handlers for the three button presses.
//
                case AL_CREATE_LIST :
                    MakeList( hDlg );
                    return TRUE;
                case AL_DELETE_LIST :
                    DeleteList( hDlg );
                    return TRUE;
                case AL_DELETE_DUPLICATES :
                    DeleteDuplicates( hDlg );
                    return TRUE;
                case AL_EXIT :
                case WM_QUIT :
                case WM_DESTROY :
                    if ( pList ) {
                        delete pList;
                        pList = 0;
                    }
                    PostMessage( GetParent( hDlg ),WM_DESTROY, 0, 0 );
                    DestroyWindow( hDlgMain );
                    hDlgMain = 0;
                    return TRUE;

            }
            break;
    }
    return FALSE;
}

//
// This routine creates a archive entry list.  We create the list
// by adding wild card files from the current directory.  After
// creating the archive, we can dump its contents to the list box.
// If you want to create some duplicates, put a string like this
// in the text box: "*.*, *.BAT".
//

void MakeList( HWND hDlg )
{
    char dir_mask[ 128 ];

    if ( pList )
        delete pList;

#if defined( ZIP )
//
// Watcom gives an annoying warning here
//
//  ALPkArchive archive( ALMemory() );
    ALMemory temp;
    ALPkArchive archive( temp );
    pList = new ALEntryList( 0, PkTools() );
#else
    ALMemory temp;
    ALGlArchive archive( temp );
    pList = new ALEntryList( 0, GlTools() );
#endif

    GetDlgItemText( hDlg, AL_DIR_MASK, dir_mask, 128 );
    pList->AddWildCardFiles( dir_mask );
    pList->FillListBox( hDlg, AL_INPUT_FILES );
}

//
// Deleting a list is pretty obvious.  We clear out the list box that
// contained the list.
//
void DeleteList( HWND hDlg )
{
    if ( pList )
        delete pList;
    pList = 0;
    SendDlgItemMessage( hDlg, AL_INPUT_FILES, LB_RESETCONTENT, 0, 0 );
}

//
// Here we delete any duplicate entries, then update the list box with the
// new, non-duplicated list.
//
void DeleteDuplicates( HWND hDlg )
{
    if ( pList ) {
        pList->UnmarkDuplicates( *pList );
        pList->DeleteUnmarked();
        pList->FillListBox( hDlg, AL_INPUT_FILES );
    }
}

//
// The about box.
//
BOOL AL_EXPORT CALLBACK
AboutDialogProc( HWND hDlg, UINT message, WPARAM wParam, LPARAM )
{
    switch ( message ) {
        case WM_INITDIALOG :
            RECT rc;
            GetWindowRect( hDlg, &rc );
            SetWindowPos( hDlg,
                          NULL,
                          (short int) ((GetSystemMetrics(SM_CXSCREEN) - (rc.right - rc.left)) / 2),
                          (short int) ((GetSystemMetrics(SM_CYSCREEN) - (rc.bottom - rc.top)) / 2),
                          0, 0, SWP_NOSIZE | SWP_NOACTIVATE);
            break;
        case WM_COMMAND :
            switch ( wParam ) {
                case IDOK :
                case WM_QUIT :
                case WM_DESTROY :
                    EndDialog( hDlg, TRUE );
                    return TRUE;

            }
            break;
    }
    return FALSE;
}

//
// The main window is nothing more than a shell that exists to manage
// the dialog box, take menu commands, and process accelerator keys.
//
LONG AL_EXPORT CALLBACK MainWndProc( HWND hWnd,
                                     UINT message,
                                     WPARAM wParam,
                                     LPARAM lParam )
{
    switch ( message ) {
        case WM_COMMAND:
            switch( wParam ) {
                case AL_ABOUT : {
                        FARPROC lpfnAboutDlgProc = MakeProcInstance( (FARPROC) AboutDialogProc, hInstance );
                        DialogBox( hInstance, "ALAboutDialog", 0, (DLGPROC) lpfnAboutDlgProc );
                        (void) FreeProcInstance( lpfnAboutDlgProc );
                    }
                    return TRUE;
                case AL_EXIT :
                    PostQuitMessage( 0 );
            }
            break;
        case WM_SETFOCUS:
            SetFocus( hDlgMain ); // insure that the Dialog Box has the focus
            break;
        case WM_DESTROY:
            PostQuitMessage( 0 );
            break;
    }
    return DefWindowProc( hWnd, message, wParam, lParam );
}

//
// WinMain first registers our class.  It then creates the dialog, and
// starts the message pump.
//
int PASCAL WinMain( HINSTANCE instance,
                    HINSTANCE previous_instance,
                    LPSTR,
                    int nCmdShow )
{
    hInstance = instance;
    if ( previous_instance == 0 ) {
        WNDCLASS wc;
        wc.style         = 0;
        wc.lpfnWndProc   = MainWndProc;
        wc.cbClsExtra    = 0;
        wc.cbWndExtra    = 0;
        wc.hInstance     = instance;
        wc.hIcon         = LoadIcon( hInstance, "ALIcon" );
        wc.hCursor       = LoadCursor( NULL,IDC_ARROW );
        wc.hbrBackground = (HBRUSH) GetStockObject( WHITE_BRUSH );
        wc.lpszMenuName  = "ALMenu";
        wc.lpszClassName = "ALClass";
        if ( !RegisterClass( &wc ) )
            return FALSE;
    }
    HWND hWnd = CreateWindow( "ALClass",
                              "ArchiveLib Example Program",
                              WS_OVERLAPPED | WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU,
                              CW_USEDEFAULT,
                              0,
                              0,
                              0,
                              NULL,
                              NULL,
                              hInstance,
                              NULL );

    FARPROC lpfn = MakeProcInstance( (FARPROC) MainDialogProc, hInstance );
    hDlgMain = CreateDialog( hInstance, "ALMainDialog", hWnd, (DLGPROC) lpfn );
    ShowWindow( hWnd, (short) nCmdShow );
    ShowWindow( hDlgMain, SW_SHOW );
    MSG msg;
    while ( GetMessage ( &msg, NULL, NULL, NULL ) ) {
        if ( hDlgMain == NULL || !IsDialogMessage( hDlgMain,&msg ) ) {
            TranslateMessage( &msg );
            DispatchMessage( &msg );
        }
    }
    return (msg.wParam);
}

//
// I need this routine for one purpose only.  After the dialog is loaded,
// it calls this routine, which adjusts the size of the framing window to
// fit exactly around the dialog box.  It also moves it to the center of
// the screen.
//
void SizeFramingWindow( HWND hDlg )
{
    RECT rect;

    GetWindowRect( hDlg, &rect );
    int y = GetSystemMetrics( SM_CYSCREEN );
    y -= ( rect.bottom - rect.top );
    y -= GetSystemMetrics( SM_CYMENU ) + GetSystemMetrics( SM_CYCAPTION );
    y /= 2;
    int x = GetSystemMetrics( SM_CXSCREEN );
    x -= rect.right - rect.left;
    x /= 2;
    SetWindowPos( GetParent( hDlg ), NULL, (short) x, (short) y,
                  (short int) ( rect.right-rect.left ),
                  (short int) ( rect.bottom-rect.top +
                  GetSystemMetrics( SM_CYMENU ) +
                  GetSystemMetrics( SM_CYCAPTION ) ),
                  SWP_NOZORDER );
}