Questions tagged [com]
Component Object Model (COM) is a component technology from Microsoft, featuring remoting, language independence and interface-based programming. For questions about the COM serial port, you should use the [serial-port] tag instead.
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Replace existing COM server while still sending messages to it
So I had the need to replace an existing Microsoft COM server with my own implementation. I did this with an in-process COM Server written in .NET 8.
In order to do this, I also took the same ProgID ...
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Set indexed Property with JACOB fails with 'Member not found'
I have to automate some tasks in XPedition with COM automation using Java and JACOB. When I try to set an indexed property of an object, I receive an error:
com.jacob.com.ComFailException: A COM ...
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Converting 32-Bit COM interface to 64-Bit
I am trying to convert/upgrade a 32-Bit COM file to compile as 64-Bit. I have fixed all of the bugs except for one. Here is the code in question:
HRESULT WINAPI QueryIMEDDevice(void *pV, REFIID riid,...
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MFC Support in Visual Studio
I have a VC++ 6.0 application that looks rather dated and doesn't build on anything later than Windows 7. I'm worried that MFC will not be supported moving forward as I upgrade to newer versions of ...
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Retrieving the COM class factory failed
I am running an old VB program, and I cannot get around the COM failure. I started with going through the forums and I did find other post with this exact issue. Here's why I had to make a new ...
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Tooltip help for C# COM DLLs [duplicate]
I am new to C# programming.
I have created a COM DLL within C# to use in Visual Foxpro. Everything is working fine, by want to extend my DLL to show tooltip for all public properties and methods to ...
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d3d10 C interface not available
I am porting an application from D3D7 to D3D10.
Even though the C interface for D3D10 exists, It does not seem to be visible when compiling/linking.
The D3D7 version uses the C interface and I do not ...
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Debugging assembly to call IUnknown::Release - is shadow space right?
I am getting a bug where sometimes this code works sometimes it does not:
48 8B 41 08 ; MOV RAX, [RCX + 0x08] gets the refcount
48 FF C8 ; DEC RAX ; decrement ...
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Updating SentOn Date value in .msg file saved in local folder
How Can I update the SentOn date in a .msg file located in local folder on my machine? Can this be done using python, VBA or any other tool?
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The COM library for checking Windows updates search does not work according to the C++ MFC source code
Environment: Visual Studio 2015, MFC
Issue:
hr = CoInitialize(NULL);
if (FAILED(hr))
{
jvResult[_T("result")] = JsonValue::number((int)ISPT_ResultEnum::ISPTResult_Fail);
jvResult[_T(...
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COM "attributes are not allowed here"
I have multiple COM objects that build fine. However, I created a new source file with another COM object an I am getting "attributes are not allowed here" when I use 'coclass". I ...
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Created COM object with .Net 8. It just works (TM) but I am struggling with deps.json and consuming with Native code
I have a .Net 4.72 DLL, exposed to COM using ComVisible(true) and the rest. I'll put example in a sec. I have been modernizing this DLL to .Net 8. This DLL consumes some registered ocx files via ...
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CorelDRAW.Application class not registered VBA CorelDRAW
I'm trying to make a program in Excel's VBA editor that interacts with Corel. When I try to run Corel in the COM via this line:
Set cdrApp= CreateObject("CorelDRAW.Application")
I get "...
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Must shell extension be not in the main STA?
I have a shell extension dll that adds a menu item in the context menu. But it can only run after I add the value ThreadingModel=Apartment in the InProcServer32 key of registry. Without the value, the ...
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I make a custom entity with dbx, and creat a com wrapper ,but some errors apper at run time
I want to implements some functionality: the plugin runs in AutoCAD , create a cunstom entity , and show it's properties in OPM, i found a reference file(Tutorial on COM Services for Custom Objects) ...
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