Thanks. It seems that both approaches - yours and mine - are not
officially supported. It would be good if every call of type
MsiSetProperty would update text controls that are connected to that
property. From what I've seen so far in the documentation, the only ways
that enable text updating involve ControlEvent, EventMapping and
ActionText. So it's a matter of choosing the smaller evil. Maybe your
suggestion works and I would rather use it, instead of creating and
hiding as many text controls as I want to display.
I will post this question to the support.microsoft.com MSI forum and
keep you posted.
Best regards,
Calin
Bob Arnson wrote:
> Calin Iaru wrote:
>> my MSI setup needs some custm actions that should modify a Static
>> text control after pressing a Configure button. I have found a
>> workaround for this problem by creating many such text controls on
>> the same client area and position and having one visible. When the
>> Configure button is pressed, the text control is hidden and another
>> one is shown. I would like to know if there are other ways to update
>> a static text control from within the custom action. Ideally, I
>> should get the visible window using GetForegroundWindow() and
>> EnumChildWindows, then use that handle in a call to SetWindowText or
>> SendMessage(.., WM_SETTEXT, ..); these approaches does not work.
>>
>
> You can try using properties in the static text. (e.g., "This is my
> mode: [MYMODE]") But there's no guarantee that MSI refreshes the
> property values while the dialog is running. Though MSI does use stock
> Windows controls for the most part, there's no guarantee that normal
> control messages will work, especially from a custom action.
>
> Otherwise, your current approach is probably the best one.
>
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