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Writing Your Own Install and Uninstall Code

Writing Your Own Install and Uninstall Code

Listing 4 A decompressing installer

//  install.h
#define RC_BINARYTYPE           256
#define ID_COMPRESSED_SETUP     100

//  install.rc
#include "install.h"

//  install.cpp
#include <windows.h>
#include "install.h"

void WriteResourceToFile(HINSTANCE hInstance,
                         int idResource,
                         char const *filename)
    //  see Listing 3

void DecompressFile(char const *source, char const *dest)
    OFSTRUCT ofs;
    ofs.cBytes = sizeof(ofs);
    int zhfSource = LZOpenFile(const_cast<char *>(source), &ofs, OF_READ);
    int zhfDest = LZOpenFile(const_cast<char *>(dest), &ofs, 	        OF_CREATE | OF_WRITE);
    LZCopy(zhfSource, zhfDest);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                   LPSTR lpCmdLine, int nCmdShow)
    WriteResourceToFile(hInstance, ID_COMPRESSED_SETUP, "AppSetup.ex_");
    DecompressFile("AppSetup.ex_", "AppSetup.exe");

    //  launch AppSetup.exe
    STARTUPINFO startInfo;        
    memset(&startInfo, 0, sizeof(startInfo));
    CreateProcess(0, "AppSetup.exe", 0, 0, FALSE, NORMAL_PRIORITY_CLASS, 0, 0,
                  &startInfo, &procInfo);

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