Let me explain : my intention is to build a custom dialog with a series of controls, in particular, a pushbutton, and his behavior must use DoAction that actives a Custom Action.
in the custom action, i use the function SdShowDlgEdit1;
InstallScript (or InstallScript MSI) dialog boxes do not use DoAction control events (or any control events). Instead the cases defined in your WaitOnDialog loop react to control interactions and run whatever code you specify.
The help topics "Using InstallScript to Implement Custom Dialogs" and "Using InstallScript to Process Dialog Controls" have more information.
On the other hand, if it's a Basic MSI project, you might see if you can avoid mixing MSI and InstallScript dialog boxes in the same project...
