I had a similar situation where I needed to convert a mass of existing
code into MSI custom actions. This code called various driver
installation APIs which could create message boxes in unusual
situations, and these boxes were displaying behind (and hidden by) the
MSI UI.
I know almost nothing about UI programming so this solution may work
more by luck than design, but it works for me on Server OSes from 2000
to 2008 R2. I set the 'owner window' parameter on relevant API calls to
the MSI UI window, which I find with the FindWindow function as follows:
hWindow = FindWindow(TEXT("MsiDialogNoCloseClass"), NULL);
I don't know to what extent I've been lucky with this; if anyone knows
of a better way to achieve the same thing, please let me know.
Regards,
jjf
> -----Original Message-----
> From: Tobi Ha [mailto:tob...@gmx.net]
> Sent: Tuesday, December 15, 2009 1:32 PM
> To: wix-users@lists.sourceforge.net
> Subject: [WiX-users] UI Custom Action displays dialog behing MSI UI
>
> Hello,
>
> I have a WiX installation that shows within a custom action a
> dialog from a dll that is installed during this installation.
> It all works fine, except that the dialogs appears behind the
> normal MSI UI.
>
> Here a short example how my custom action looks like (instead
> of message box, a real UI appears)
>
> UINT __stdcall MessageBoxAction (MSIHANDLE hInstall)
> {
> Beep(500,2000);
>
> LPCTSTR lpszText = L"A message box text";
> LPCTSTR lpszCaption = L"A message box title";
> UINT nType = MB_OK;
> MessageBox(NULL,lpszText,lpszCaption,nType);
>
> return ERROR_SUCCESS;
> }
>
> Is there a way to display the own UI in foreground?
>
> Cheers,
> Tobias
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