Summary

Synopsis

Discussion

When a form is displayed modally, no input (keyboard or mouse click) can occur except to objects on the modal form. The program must 
hide or close a modal form (usually in response to some user action) before input to another form can occur. Forms that are displayed 
modally are typically used as dialog boxes in an application.

If this bit is set, the dialog box is modal, other dialogs of the same application cannot be put on top of it, and the dialog keeps 
the control while it is running. If this bit is not set, the dialog is modeless, other dialogs of the same application may be moved 
on top of it. After a modeless dialog is created and displayed, the user interface returns control to the installer. The installer 
then calls the user interface periodically to update the dialog and to give it a chance to process the messages. As soon as this is 
done, the control is returned to the installer.


Note  There should be no modeless dialogs in a wizard sequence, since this would return control to the installer, ending the wizard 
sequence prematurely.

Workaround