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Modeless dialog in VB ActiveX Dll project

Posted on 1999-07-29
Medium Priority
Last Modified: 2012-05-05
I cannot create a modeless dialog when using my ActiveX DLL in Visual C++ (in VB it is OK). The return code (HRESULT) is 0x800a0196. Creating a modal dialog works well.

This is a part of my code in VB:

Private Sub Class_Initialize()
    Set frmSplashScreen = New frmSplash
End Sub

Public Sub Show()
    frmSplashScreen.Show vbModeless
End Sub

And this is my C++ invocation:

#import "Splash.dll"

DSLSplash::_SplashScreenPtr pSplash;
HRESULT hr = pSplash->raw_Show();
Question by:pecan
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Expert Comment

ID: 1528183
it is not recommended to have any kind of dialog boxes or message boxes modal or otherwise, in a DLL. I am not sure of this, but i think the documentaion say NOT specifically not to have modeless dialog boxes in a DLL. This might be cos the dialog box can be left unattended and can cause the DLL to remain in memory longer than needed

Accepted Solution

AnswerTheMan earned 300 total points
ID: 1528184
Donno, after long expireince writing ActiveXs(Controls,DLL,EXE), i more and more convinced that if going
to do any GUI actions in th ActiveX - it should not be a DLL.
what's for ? you can use activeX control for that.

as for the Modal thing in MFC:
try to create a dirived CDialog class that will be activated
with DoModal();
maybe you can kinda wrap the ActiveXDLL inside the process of the Dialog. never tried it myself.


Author Comment

ID: 1528185
Although it didn't work even as an ActiveX Colntrol, your answer made me try to build my project as an ActiveX EXE and it works.

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