Forum Discussion

Inok's avatar
Inok
Occasional Contributor
13 years ago

Best Practice checking if List Entry does not exist

I recorded a deinstalling procedure which basically works fine. I will use this for a clean up before installing and testing a setup, thus I deinstall a previous installation. But the first time, or ...
YMinaev's avatar
YMinaev
Staff
13 years ago
Hi,



If you're working with the list of installed programs in Windows, you just need to search it for the needed entry before trying to address it. For example:



var list = Sys.Process("Explorer")./*lots of Explorer windows*/.Window("SysListView32", "FolderView");

var found = false;

for(var i = 0; i < list.wItemCount; i++)

if(list.wItem(i) == "App name")

{

found = true;

break;

}



if(found)

{

// some actions with the "App name" item

}





Also, there's a way to uninstall applications without dealing with GUI. There's an example in TC's How To here. The script posted there uses WMI to find and remove applications which is faster and more reliable than clicking in the 'Programs and Features' list.