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MFC Examples

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(MFC) Create a Zip Entirely in Memory

Demonstrates how to create a .zip from in-memory byte data and strings, and to write the .zip to an in-memory image.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkCrypt2.h>
#include <CkZip.h>
#include <CkByteData.h>
#include <CkZipEntry.h>
#include <CkFileAccess.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkCrypt2 crypt;
    CkZip zip;

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

    //  Add the bytes 0x00 0x01 0x02 0x03 ... 0x0F as a file in the .zip
    CkByteData binFileData;
    success = crypt.Decode("000102030405060708090A0B0C0D0E0F","hex",binFileData);
    CkZipEntry *entry = zip.AppendData("binaryData.dat",binFileData);
    delete entry;

    //  Add the string "Hello World!" to the .zip
    entry = zip.AppendString2("helloWorld.txt","Hello World!","utf-8");
    delete entry;

    CkByteData zipFileInMemory;
    success = zip.WriteToMemory(zipFileInMemory);

    //  We could save these files to a file, and it is a valid .zip
    CkFileAccess fac;
    success = fac.WriteEntireFile("test.zip",zipFileInMemory);
    if (success != true) {
        strOut.append(fac.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("Zip Created!");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }

 

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