64 bit COM component

[hamidarr]

Thank you for your replying.I put QtCore4.dll ,QtGui4.dll and my dll(that has been created from source) together in the same directory then I register it with regsvr32 successfully but when I want to add it in visual studio as Com component(toolbox-->right click--->choose Item--->COMcomponent)it give me this error self registration for ......dll faild.

[ChrisW67]

You need to have all the dependencies of the Qt libraries
http://qt-project.org/doc/qt-5/windo...cation-package

[hamidarr]

But I don not have any problem when I make 32 bit dll.I do the same things for 64 bit but it gives me this error.

[d_stranz]

Is Visual Studio a 64-bit app or a 32-bit app? Many Windows apps have not been ported to 64-bit versions. Just because Visual Studio can generate 64-bit code does not mean that Visual Studio itself is a 64-bit app. If it is a 32-bit app, it probably can't load an in-process 64-bit COM DLL. I don't think you can do anything to fix that. Unlike the change from 16-bit to 32-bit, there is no "thunking" in Windows to allow a 32-bit app to use a 64-bit DLL.

You could try building your COM component as an out-of-process server. Or move into the modern world and not use COM at all :-).

[hamidarr]

Thank you for replying.Could you tell me how can I build my Com component as an out-of-process server???