ActiveX controls with old Delphi versions

Posted by DamienD on Stack Overflow See other posts from Stack Overflow or by DamienD
Published on 2010-03-25T07:19:28Z Indexed on 2010/03/25 7:23 UTC
Read the original article Hit count: 393

Filed under:

delphi

|

activex

I'm testing a non visual ActiveX control based on a registered .ocx which I import into Delphi using the provided wizard.

Then, I simply put the generated component on the main form of a new VCL application.

Under old Delphi versions (D5 and D2007), when i launch the application, this raise an AV during the component initialization.

with Delphi 2009 : no problem, the application starts smoothly.

My questions are :

Are there known enhancements of ActiveX management in recent Delphi versions which can explain this difference ?

Can I suspect a bug in the ActiveX control, or can I consider the origin of the problem is from old Delphi versions ?

I need to use this component (if tests OK) in D2007. Do you think that it is possible to correct the AV problem under D2007 by modifying the D2007 generated .tlb file (for example by trying to use the D2009 generated one)

PS: the ActiveX control is not named, because my question is a general question about Delphi and ActiveX, not about a specific ActiveX control.

© Stack Overflow or respective owner

Related posts about delphi

TVirtualStringTree compatibility between Delphi 7 and Delphi 2010 - 'Parameter lists differ'

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I've made a form containing a TVirtualStringTree that works in Delphi 7 and Delphi 2010. I notice that as I move between the two platforms I get the message '...parameter list differ..' on the tree events and that the string type is changing bewteen TWideString (D7) and string (D2010). The only… >>> More
Convert Delphi 7 code to work with Delphi 2009

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a String that I needed access to the first character of, so I used stringname[1]. With the unicode support this no longer works. I get an error: [DCC Error] sndkey32.pas(420): E2010 Incompatible types: 'Char' and 'AnsiChar' Example code: //vkKeyScan from the windows unit var KeyString:… >>> More
Book recommendation for moving from Delphi 6 to Delphi 2010

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am a long time Delphi 6 developer. Looking for a book on Delphi 2010. Not only on the new features available in Delphi 2010, but more importantly, guideline on how different it is to develop applications in Delphi 2010, the architecture, standard and convention, etc. Thanks a lot. >>> More
Compile Delphi component package (bpl) for different Delphi versions

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello. The situation is the following. Typically I use RAD Studio 2010 for Delphi development. I have some components I would like to redistribute in binary form (*.bpl without source). But I would like people to be able to use them despite of their Delphi version. But, for example, dcu files can… >>> More
Delphi Speech recognition delphi

as seen on Stack Overflow - Search for 'Stack Overflow'
I need create a programatic equivalent using delphi language... or could someone post a link on how to do grammars in peech recogniton using the delphi. sorry for my english... XML Grammar Sample(s): <GRAMMAR>  <RULE NAME="HelloWorld"… >>> More

Related posts about activex

VBA ActiveX controls grow in size over Remote Desktop Connection

as seen on Stack Overflow - Search for 'Stack Overflow'
We have an Excel workbook with a number of ActiveX controls, running in Excel 2003 on Windows XP. When connecting using Remote Desktop, the ActiveX controls change font, sometimes font size, and sometimes orientation (in the case of a spinner control). This happens on first connection and also as… >>> More
How to share session cookies between Internet Explorer and an ActiveX components hosted in a webpage

as seen on Stack Overflow - Search for 'Stack Overflow'
I am currently working on a .Net application which makes HTTP requests to some web applications hosted on a IIS server. The application is deployed through ClickOnce and is working fine on simple networks architectures. One of our customers has a very complex network involving a custom authentication… >>> More
How can I call ActiveX from SAP?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a custom ActiveX control that I would like to Call from SAP. In this case I cannot use PI, what other options do I have? >>> More
Load ActiveX DLL in Internet Explorer with elevated privileges

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an ActiveX control that I'm loading with JavaScript in Internet Explorer. It needs to run as medium integrity under UAC in Vista and Win7. This is written in C/C++, compiled in Visual Studio. One way to elevate privileges is to create a broker process that can request a medium integrity level… >>> More
Troubleshoot Page Loading Issue (ActiveX control)

as seen on Stack Overflow - Search for 'Stack Overflow'
Apologies for cryptic title, I'm hoping most people will read this BEFORE trying to move it to server fault. I might try and discourage the "too hard basket, move it to server fault anyway" crowd as well :). I have a page which will open cleanly when it's opened in it's own browser window/tab. … >>> More