Windows native APIs can be incorporated into a. NativeWin32.SetForegroundWindow(iHandle) FindWindow takes two arguments, the first is the pointer to a null-terminated string that specifies the class name used to register the Window class and if this is null then the second argument is a Pointer to a null-terminated string that specifies the Window name (the Window's title).Ĭopy Code int iHandle = NativeWin32.FindWindow( null, txtTitle.Text) To get the Window handle I use yet another native API FindWindow. SetForegroundWindow requires the Windows handle to bring it to the front. To make any Windows active from another application we have to take help from the Windows native API SetForegroundWindow. Active application is the one which is in focus to accept keyboard input. One issue with the SendKeys class is it can only send keystrokes to the active application. NET 2.0 SendKeys class to do most of its work. This is very simple WinForm application, which basically utilizes. This small sample application shows how to accomplish this emulation of sending keystrokes to applications using Microsoft. The only way to control these kinds of applications is emulating keystrokes to them to make them act as they would if they were in focus and taking keyboard input. Microsoft Office such as Excel or Word provide their object models to integrate with them.īut still from time to time there are applications which do not provide or expose any of the above mentioned techniques that can be utilized to do the integration with them. A good example of it would be the Microsoft Office line of products. Now-a-days different applications provide their object models to achieve the same kind of integration services. OLE became the backbone for technologies such as Component Object Model (COM). Since the DDE was limited to transferring data between two running applications, with the emergence of Object Linking and Embedding (OLE) automation became more prominent to these integration tasks with much confidence. DDE utilized the basic Windows Messaging Layer functionality. For example, in the good days on Windows 3.1, Data Dynamic Exchange (DDE) or some screen scrapping techniques were used to accomplish that. Integration between applications depends on the services that applications can expose or provide. There are many different tools and technologies available these days to accomplish that kind of automation. It may be to provide automation services, to give control or for the ease of use of customers who are not very computer savvy. Sometimes in the life of a developer, a need arises to control another application from his/her application.
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