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djjd47130 (Programmer)
25 Oct 11 10:42
I have been writing custom components for quite some time now. I've also converted some things to ActiveX. What I'm working on now I've already converted to an ActiveX control, but now for some reason, when I try to build the ActiveX control (based on my existing control), I get this error "Control ' has no parent window".

I am using Delphi7 and its option to create an ActiveX control based on any TWinControl inheritance. In this case, I'm basing my control off of a TCustomControl. I suspect my problem is coming from within this control's constructor...

CODE

constructor TJDChatClientWrap.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  Parent:= TWinControl(AOwner);
  fCli:= TJDChatClient.Create(Self);
  fCli.OnLog:= CliLog;
  fCli.OnLoginResponse:= CliLoginResult;
  Font.Color:= clSkyBlue;
  Font.Size:= 10;
  Font.Style:= [fsBold];  
  Paint;
end;

The control wraps another existing non-visual component (TJDChatClient: TComponent). Like I said, it was working fine the first time I made it into an ActiveX control, but this second time is failing with this error.
 

JD Solutions

whosrdaddy (Vendor)
27 Oct 11 1:57
try

CODE

ParentWindow := TWinControl(AOwner);

/Daddy

-----------------------------------------------------
 What You See Is What You Get
Never underestimate tha powah of tha google!

djjd47130 (Programmer)
27 Oct 11 20:37
Those types don't match... Do you mean...

CODE

ParentWindow:= TWinControl(AOwner).Handle;
That doesn't even work either though...

JD Solutions

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