In all three cases your EXE is executed with the "-uninstall" parameter. Normally Thinstall will check to see if this parameter is present before running your program. If it is, it invokes the uninstall procedures and does not run your program. If your program needs to clean up additional items, for example remove registry keys or delete specific files, you can instruct Thinstall to ignore this command line parameter.
This option can be set using the dialog box located at Link -> Install Options -> Uninstall:
When this option is set, Thinstall will not process the "-uninstall" command line parameter. Instead, your program is loaded and run normally. You should detect this command line argument manually, for example in C++:
void main(int argc, char **argv)
{
if (argc==2 && strcmp(argv[1], "-uninstall")
{
// make sure user really wants to uninstall, and this was not an accidental selection
if (MessageBox(0, "Are you sure you want to uninstall?", "Uninstalling Ubersoftware", MB_YESNO)== IDNO)
ExitProcess(0); // if accidental uninstall, quit without setting environment variable
// do additional uninstall steps you need to do
do_additional_uninstall_stuff();
// tell Thinstall to complete uninstall when progam quits by setting this environment variable
SetEnvironmentVariable("TS_UNINSTALL", "1");
ExitProcess(0);
}
// normal_program execution here....
}
Once you detect the "-uninstall" command line parameter you should do 4 things: