com

I have a Win32 application that includes an EXE, an ActiveX control (DLL) and a COM server (EXE) and I am using Inno Setup 5 to build my installer. Many of our customers use limited user accounts where the user has no admin rights and because the COM components require to be registered (which writes to HKEY_CLASSES_ROOT), my setup file must run with elevated (admin) privileges. I think this in unavoidable (sadly, I can't use registration-free COM because of the EXE COM server I have). However, I would like to create an update installer that can be ran as a limited user and am looking for some

I'm using Invoke for late binding on a legacy COM objects that supports IDispatch. This seems necessary as .NET's Type.GetMethod Type.InvokeMember do not seem to work on these objects. The following code works fine for getting a property from an object, the caller passes in the property name as a string for getting the property value with late binding. The class takes an object in its constructor and sets up this.idisp (and this.lcid) as an interface pointer to the object (Critiques welcome!) public object InvokeGet(string propertyName) { int id = GetDispID(propertyName); IntPtr[] pArgErr =

The problem I'm facing is essentially described here , that is: I have a DLL that is using a 3rd party in-process COM component dll. I want to use registration free COM with that in-process component. I want to embed and use a manfest into this DLL (not into the main EXE) so that I can use the 3rd party component in a reg free way. The Interface I use from the component is activated through a call to CoCreateInstance . The 3rd party COM component hasn't got any further (COM) dependencies and doesn't rely on or need isolation. I see that simply embedding a manifest into my DLL doesn't work, as

we're developing a software to control a scientific measuring device. it provides a COM-Interface defines several functions to set measurement parameters and fires an event when it measured data. in order to test our software, I'm implementing a simulation of that device. the com-object runs a loop which periodically fires the event. another loop in the client app should now setup up the com-simulator using the given functions. I created a class for measuring parameters which will be instantiated when setting up a new measurement. // COM-Object public class MeasurementParams { public double

In the C# 4.0 demos, I'm seeing lots of code that uses the dynamic type. For example, the following code sets the value of an Excel cell: excel.Cells[1, 1].Value = ... However, you can also access the cell in an early bound manner with a cast: ((Range)excel.Cells[1, 1]).Value = ...; Why don't the Excel COM library just describe the Cell type as a Range type in the first place? Similarly, all the arguments to the following method are dynamic: excel.ActiveWorkbook.Charts.Add(...) Why couldn't the arguments have been static? Looking at the Excel object model, there are dynamic types everywhere.

I'm using the COM interface to Excel and I would like to get hold of the formatted textual representation of a cell rather than the true underlying value. For example, suppose the cell contains the number 1.23456 and the user has specified the number format with 1 decimal place. Then I'd like to be able to read the string "1.2" . I know that I can use Range.Text but this fails in a couple of significant ways. Range.Text returns what the user sees in the view of the sheet and so if the cell is hidden then the empty string is returned. If the cell's width is low then a truncated string is

I'm a COM newbie and I think what I have is correct, but the runtime doesn't like it. Any help is much appreciated. I need to invoke a COM function that takes in a single dimensional array of BSTRs. Specifically, the documentation says the parameter must be: Function: AddFiles ( [in] VARIANT * filePaths ) filePaths The single-dimensioned array of full paths to each file or folder. filePaths can be of type VT_ARRAY|VT_VARIANT , where each entry is a VT_BSTR , or VT_ARRAY|VT_BSTR . I have a vector<wstring> myPaths of paths which I want to pass into the function that takes the parameter above.