I have a native C++ application that, for the time being simply needs to send its command line string and current mouse cursor coordinates to a WPF application. The message is sent and received just fine, but I cannot convert the IntPtr instance in C# to a struct. When I try to do so, the application will either crash without exception ...
I've concocted an open source license in my head that I feel is a good compromise between copyleft and permissive licenses. I think it extracts many of the benefits of copyleft with few of the downsides. Here's a rough draft of it. The spirit of it is that a company should be able to profit by adding value to open source software, but...
Hello, I've been successfully creating a .net mutex like this: SingleIns = new Mutex(true, AppName); for a while. It works in XP, Vista, but apparently not in Windows7. So I need to make an interop call to a Win32 library so other Com components can identify the mutex. I found the following code, but the Win32Calls. is not found... is...
Is there any tutorial or resource I can follow in order to use the OpenSharedItem outlook interop method. My goal is to read MSG files using it (as it can apparently do so). ...
Any ideas why the following code does not exit the Outlook 2007 process created via COM interop? Microsoft.Office.Interop.Outlook.Application app = new Microsoft.Office.Interop.Outlook.Application(); var item = app.Session.OpenSharedItem("C:\\test.msg") as Microsoft.Office.Interop.Outlook.MailItem; string body = item.HTMLBody; int att ...
Probably a noob question but interop isn't one of my strong points yet. Aside from limiting the number of overloads is there any reason I should declare my DllImports like: [DllImport("user32.dll")] public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, IntPtr lParam); And use them like this: IntPtr lParam = Marshal...
I am playing with the Microsoft Outlook View control, trying to understand its capabilities, but I'm not getting very far. It shows up at design time, but at runtime it just gives an "E_CLASSNOTREG" exception. How do I find out what class it is complaining about? I just created a winform project, added the control to the toolbox, and dr...
I have a VB6 project(windows application) and I have to redevelop a module in the existing VB6 project in C#.net. The module that I develop in C#.net should be a dll and should contain some windows forms. I was able to successfully call a c# console applicaiton dll from my vb6 project but I am facing issues when i try to call a C# clas...
I've created ILockBytesOnHGlobal and I write 64k of data repeatedly. What I've noticed is that WriteAt performance decreases over the time. What could be the reason for the performance slow down? Does it have to do with stream growth? Here is what I'm doing (in C#) public override void Write(byte[] buffer, int offset, int count) ...
I am using WatiN to script actions in Internet Explorer that run in the background of the user's machine. (I know...hacky). I am able through WatiN to make the Internet Explorer window not show. However, during my script, some HTML dialogs are opened. I am able to hide them using the P-Invoke ShowWindow in User32.dll, but they still ...
I'm trying to call a .NET component using interop from a classic ASP page (VBScript). If a .NET function returns a "System.String", is there a way for me to use that as a VBScript string? Is there something I need to do to convert it? ...
Hello everyone, I have a project that is an open source application for a specific type of scientific calculation that uses c++ for the backend, and C# for the front end. I'm not doing anything windows specific in the c++ portion, so I'm hoping for a relatively small learning curve there. I have a few specific questions, and I would appr...
Hi there, I am having to pass a ULONG_PTR in unsafe code in C#. I understand that the reason for ULONG_PTR is to allow for a single codebase for both 32bit and 64bit operating systems. Is this a case for C#'s UIntPtr? Can I be confident when passing a .Net UIntPtr as an ULONG_PTR parameter? Thanks! ...
I have an unmanaged code that calls an asynchronous managed method that returns a handle, and then the unmanaged code use that handle to wait, reading a little documentation I found out that SafeWaitHandle provide 2 other methods (DangerousAddRef and DangerousRelease ). Should I use these methods in order to prevent the Handle from not b...
I am trying to determine if the COM interop is becoming a bottle neck in my software. This article on MSDN helps http://msdn.microsoft.com/en-us/library/ms998579.aspx#scalenetchapt15%5Ftopic11. But I really do not have have a point of reference for a "normal" or "high" value for # of marshalling to determine if it is impacting performanc...
Hi All, I have created a windows application which makes use of Office.dll and powerpoint dll of Microsoft office 2003. At design time, when I am adding referrence of these dlls to my project it refers following path; C:\WINDOWS\assembly\GAC\Microsoft.Office.Interop.PowerPoint\ The application runs perfect on the machine where it is de...
I'm trying to create and use a .NET StreamWriter object inside a classic ASP page (VBScript). Normally I would create the object like this: Dim writer Set writer = Server.CreateObject("System.IO.StreamWriter") However, the constructor for StreamWriter takes a Stream object as a parameter, and the call to CreateObject fails. Even if I...
Hi, I want to make a windows service that monitors another windows service, and make sure that it is working. sometimes the Win Service that I want to watch stay in the memory (appear in task manager, so it is considered a running service, but the fact is that it is doing nothing, it is dead, its timer is not firing for one reason, which...
Hi all, The Following is from JavaTM IDL FAQ: How do I connect to a 3rd-party Naming Service from Sun's ORB? The recommended way is to use the Interoperable Naming Service (INS) , if this option is supported by the 3rd-party Naming Service. To use the Sun ORB with another vendor's Naming Service, Start th...
I create a simple WPF UserControl (any control will do) and insert it into a Winform (using an ElementHost). This works fine. The WPF control is embedded in the WinForm and when the WinForm is moved around the WPF control moves with it just like a WinForm control will do. When I change the WinForm to transparent by setting the Tranparenc...