ProfitPress Mega CDROM2 …eeware (MSDOS)(1992)(Eng)/ProfitPress-MegaCDROM2.B6I/WINDOWS/MISC/WZUN11SR.ZIP/ACTION.C

C/C++ Source or Header | 1992-01-23 | 5.5 KB | 182 lines

#include <windows.h>    /* required for all Windows applications */
#include <assert.h>    /* required for all Windows applications */
#include "wizunzip.h"                /* specific to this program              */
#include "unzip.h"

/* Action.c module of WizUnzip.
 * Author: Robert A. Heath, 1992
 * I, Robert Heath, place this source code module in the public domain.
 */
char NoMemoryMsg[] =
            "Insufficient memory for this operation!";

int    MsWinDoAll;

BOOL bIconSwitched = FALSE;    /* set true after 1st valid action    */

/* Get Selection Count returns a count of the selected
 * list box items. If the count is  greater than zero, it also returns
 * a pointer to a locked list in local memory of the item nos.
 * and their local memory handle.
 * A value of -1 indicates an error.
 */
int GetLBSelCount(HWND hListBox, int **ppnSelItems)
{
int    nSelCount = (int)SendMessage(hListBox, LB_GETSELCOUNT, 0, 0L);
int    nRetrieved;

    if (nSelCount)
    {
        *ppnSelItems = (int *)LocalAlloc(LMEM_FIXED, nSelCount * sizeof(int));

        assert(*ppnSelItems); /* DEBUG */
        if (!*ppnSelItems)
        {
            return(-1);
        }
        nRetrieved = (int)SendMessage(hWndList, LB_GETSELITEMS, nSelCount, (LONG)(LPSTR)*ppnSelItems);
        assert(nRetrieved == nSelCount);
        if (nRetrieved != nSelCount)
        {
            LocalFree((HANDLE)*ppnSelItems);
            return(-1);
        }
    }
    return(nSelCount);
}

/* Re-select listbox contents from given list. The pnSelItems is a
 * list containing the indices of those items selected in the listbox.
 * This list was probably created by GetLBSelCount() above.
 */
void ReselectLB(HWND hListBox, int    nSelCount, int *pnSelItems)
{
int i;

    for (i = 0; i < nSelCount; i++)
    {
        SendMessage(hListBox, LB_SETSEL, TRUE, MAKELONG(pnSelItems[i],0));
    }
}


/* Action is called on double-clicking, or selecting one of the 3
 * main action buttons. The action code is the action
 * relative to the listbox or the button ID.
 */
void Action(WORD wActionCode)
{
int i;
int nLength;
int *pnSelItems;            /* pointer to list of selected items    */
int    nSelCount = GetLBSelCount(hWndList, &pnSelItems);
char szBuffer[100];            /* scratch buffer        */

    if (nSelCount < 1)        /* if no items were selected            */
        return;

    /* Note: this global value can be overriden in replace.c
     */
    MsWinDoAll = (bOverwrite) ? 1 : 0;
    hSaveCursor = SetCursor(hHourGlass);
    ShowCursor(TRUE);       /* show it      */

    /* march through list box checking what's selected
     * and what is not.
     */
    for (i = 0; i < nSelCount ; i++)
    {
        /* extract item from list box...        */
        if ((nLength = (int)SendMessage(hWndList, LB_GETTEXT,
                            pnSelItems[i], (LONG)(LPSTR)szBuffer)) > 0)
        {
        WORD wIndex = !wFormat ? /* index of filename in buffer */
                SHORT_FORM_FNAME_INX:LONG_FORM_FNAME_INX;

        PSTR pfn = &szBuffer[wIndex]; /* points to filename */
        /* fake arg list for process_zipfile() */
        static char *FileNameVector[] = { "", "" };

            WinAssert(nLength < (sizeof(szBuffer)-1)); /* DEBUG */
            FileNameVector[0] = pfn;     /* pass desired filename */
            switch (wActionCode) {
            case 0:            /* extract                            */
                if (SetUpToProcessZipFile(0, 0, 0, 1, 0,
                                (int)(bRecreateDirs ? 1 : 0),
                                MsWinDoAll, (int)(bTranslate ? 1 : 0),
                                    1, szFileName, FileNameVector))
                    process_zipfile();    /* call into unzip.c        */

                else
                    MessageBox(hMainWnd, NoMemoryMsg, NULL,
                                MB_OK|MB_ICONEXCLAMATION);

                TakeDownFromProcessZipFile();    /* clean house    */
                break;
            case 1:                /* display to message window        */
                bRealTimeMsgUpdate = FALSE;
                if (SetUpToProcessZipFile(1, 0, 0, 1, 0,  0, 0, 0,
                                    1, szFileName, FileNameVector))
                    process_zipfile();    /* call into unzip.c        */

                else
                    MessageBox(hMainWnd, NoMemoryMsg, NULL,
                                MB_OK|MB_ICONEXCLAMATION);

                TakeDownFromProcessZipFile();    /* clean house    */
                bRealTimeMsgUpdate = TRUE;
                UpdateMsgWndPos();                /* update window now */
                break;
            case 2:                /* test                            */
                if (SetUpToProcessZipFile(0, 1, 0, 1, 0,  0, 0, 0,
                                    1, szFileName, FileNameVector))
                    process_zipfile();    /* call into unzip.c        */

                else
                    MessageBox(hMainWnd, NoMemoryMsg, NULL,
                                MB_OK|MB_ICONEXCLAMATION);

                TakeDownFromProcessZipFile();    /* clean house    */
                break;
            }
        }
    }
    pnSelItems = (int *)LocalFree((HANDLE)pnSelItems);  /* Returns it to Windows */
    assert(!pnSelItems);    /* DEBUG */
    ShowCursor(FALSE);      /* turn off cursor      */
    SetCursor(hSaveCursor); /* restore the cursor   */
    if (!bIconSwitched)     /* if haven't already, switch icons    */
    {
    HANDLE hIcon;

        hIcon = LoadIcon(hInst,"UNZIPPED"); /* load final icon   */
        assert(hIcon);    /* DEBUG */
        SetClassWord(hMainWnd, GCW_HICON, hIcon);
        bIconSwitched = TRUE;    /* flag that we've switched it    */
    }

}

/* Display the archive comment using the Info-ZIP engine.
 */
void DisplayComment(void)
{

    hSaveCursor = SetCursor(hHourGlass);
    ShowCursor(TRUE);       /* show it      */
    bRealTimeMsgUpdate = FALSE;
    if (SetUpToProcessZipFile(0, 0, 0, 1, 1, 0, 0, 0,
                        0, szFileName, NULL))
        process_zipfile();    /* call into unzip.c        */

    else
        MessageBox(hMainWnd, NoMemoryMsg, NULL,
                    MB_OK|MB_ICONEXCLAMATION);

    TakeDownFromProcessZipFile();    /* clean house    */
    ShowCursor(FALSE);      /* turn off cursor      */
    SetCursor(hSaveCursor); /* restore the cursor   */
    bRealTimeMsgUpdate = TRUE;
    UpdateMsgWndPos();        /* update window now     */
}