(MFC) Unzip Selected Files from a Zip Archive

Demonstrates how to iterate over the files contained within a .zip and unzip specific files.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkZip.h>
#include <CkZipEntry.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkZip zip;

    bool success = zip.OpenZip("my_files.zip");
    if (success != true) {
        strOut.append(zip.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    const char *unzipDir = "/temp/unzipDir";

    int n;

    // Get the number of files and directories in the .zip
    n = zip.get_NumEntries();
    strOut.appendInt(n);
    strOut.append("\r\n");

    CkZipEntry *entry = 0;

    int i;
    for (i = 0; i <= n - 1; i++) {

        entry = zip.GetEntryByIndex(i);
        if (entry->get_IsDirectory() == false) {
            // (the filename may include a path)
            strOut.append(entry->fileName());
            strOut.append("\r\n");

            // Your application may choose to unzip this entry
            // based on the filename.
            // If the entry should be unzipped, then call Extract(unzipDir)
            success = entry->Extract(unzipDir);
            if (success != true) {
                strOut.append(entry->lastErrorText());
                strOut.append("\r\n");
                SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
                return;
            }

        }

        delete entry;
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }