interop

passing a complex object in c++ to c# through COM

由 匆匆过客 提交于 2019-12-08 06:09:02
问题 This question expands on the existing question here: Passing an object from C++ to C# though COM The previous question deals with a simple object, but I would like to do the same for a complex object. So instead of TestEntity1 having a single property, if it has another property of type TestEntity2, how can I assign the property of type TestEntity2 of the TestEntity1 object in c++ consumer? C#: using System; using System.Collections.Generic; using System.Text; using System.Runtime

How to know which COM component is called by a certain PIA?

由 梦想的初衷 提交于 2019-12-08 06:03:22
问题 I got a PIA installed on my box, it is Microsoft.mshtml . If I understandd it correctly, these PIA is provided by Microsoft to ease our life of COM interop. But I want to know which COM component is actually wrapped/called by this PIA. Because I am having a UnauthorizedAccessException, I want to locate the actual COM component and use dcomcnfg.exe to grant it proper permission. I hope this is the right direction. Thanks! 回答1: It is c:\windows\system32\mshtml.dll. I seriously doubt that

Access MS-Word spell-checker from (unmanaged) C++

由 南楼画角 提交于 2019-12-08 05:37:56
问题 I found a few articles on interacting with the MS-Word spell-checker from C# and managed C++ using .NET. (For anyone interested: this and this) But I couldn't find anything comparable on doing it through standard unmanaged C++ in an MFC app, using COM. I assume the .NET examples are actually using COM meaning it's possible, but is it likely to be horrific and ugly to do? 回答1: I did this. It is not that complicated. I packed the whole thing in a DLL and made the suggestions-dialog myself.

Excel file operations using interop in multithreaded C# application fails

由 痴心易碎 提交于 2019-12-08 05:36:17
问题 I've an application that automates some file related jobs. Every job is executed inside separate threads. One kind of job is exporting an Excel file to HTML format. I use Microsoft.Office.Interop.Excel namespace for this purpose. My application was working fine under Windows Server 2008 environment but we upgraded our server to Windows Server 2012 and I started to get the following error : The message filter indicated that the application is busy. (Exception from HRESULT: 0x8001010A (RPC_E

Using P/Invoke correctly

由 扶醉桌前 提交于 2019-12-08 05:10:01
问题 I need to call an external dll from c#. This is the header definition: enum WatchMode { WATCH_MODE_SYSTEM = 0, WATCH_MODE_APPLICATION = 1 }; LONG ADS_API WDT_GetMode ( LONG i_hHandle, WatchMode * o_pWatchMode ); I've added the enum and the call in C#: public enum WatchMode { WATCH_MODE_SYSTEM = 0, WATCH_MODE_APPLICATION = 1 } [DllImport("AdsWatchdog.dll")] internal static extern long WDT_GetMode(long hHandle, ref WatchMode watchmode); This generates an AccessViolationException. I know the dll

Getting data from C# to Excel 03/07

由 ▼魔方 西西 提交于 2019-12-08 05:06:45
问题 I have files with tons of real time data that I process with an C# application. After processing the data it is presented in Excel using a specific template. This is solved using Interop today. I must say I don't completely gasp the whole Interop situation. Do I have to manually install the Interop functionality on each end user terminal somehow? How does it handle the mix of 2003/2007 versions? 回答1: If you know the structure of your Excel document (and presuming you don't want and kind of

How to work around unsupported unsigned integer field types in MS SQL?

由 妖精的绣舞 提交于 2019-12-08 04:24:29
问题 Trying to make a MySQL-based application support MS SQL, I ran into the following issue: I keep MySQL's auto_increment as unsigned integer fields (of various sizes) in order to make use of the full range, as I know there will never be negative values. MS SQL does not support the unsigned attribute on all integer types, so I have to choose between ditching half the value range or creating some workaround. One very naive approach would be to put some code in the database abstraction code or in

C#/COM interop working only in debugger

由 时光毁灭记忆、已成空白 提交于 2019-12-08 04:21:52
问题 I have a problem with COM interop from a C# application to an inproc COM server component. I have reduced the problem to a simple c# test program. It instantiates the server component's interop class, sets the value of a string a property on the instance, and then sets another string property. I'm not doing anything unusual with marshalling. Just using the interop class generated when I added a reference to the COM component. Something like: using MyLib; // Interop assy // ... MyComp comp =

Scala/Java interop: class type not converted?

由 会有一股神秘感。 提交于 2019-12-08 04:06:26
The javafx api is defined like this: void addListener(ChangeListener<? super java.lang.Boolean> listener) The following code.. new TextArea().focusedProperty.addListener(new ChangeListener[Boolean]() { def changed(observable: ObservableValue[_ <: Boolean], oldValue: Boolean, newValue: Boolean) { } }) ..gives this error: overloaded method value addListener with alternatives: (javafx.beans.value.ChangeListener[_ >: java.lang.Boolean])Unit (javafx.beans.InvalidationListener)Unit cannot be applied to (java.lang.Object with javafx.beans.value.ChangeListener[Boolean]) If I use java.lang.Boolean

Use VB to distinguish between an xlsx event from C# Interop or Excel program

由 随声附和 提交于 2019-12-08 04:00:43
问题 I have an event that I want triggered when a user closes a .xlsx file. I also have a C# program that regularly checks the content within that same file. The problem I have is that when my C# program (which uses Interop) closes the .xlsx file, it triggers my VB code. Is there a way to isolate access to the excel file so that I know it was edited within the Excel program? I only want my VB code triggered when a user edits the file within Excel. Thanks 回答1: I decided to simply have my C# program
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