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This article mainly explains "how to embed the window of a third-party program in SWT program". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to embed a window of a third-party program in a SWT program.

When developing a system, we often need to embed external programs, such as integrating the original system of the enterprise into our system, and it looks like our program to be embedded in our system, so we have to rely on Win32. In the past, when using VC, Delphi, C# development, you can directly call the API of Win32 to operate, fortunately, SWT provides the encapsulation of Win32API, and the encapsulation is better, most of them are in the org.eclipse.swt.internal.win32.OS class. The core principle is to call the API SetParent to set a control in our program as the parent window of the nested program.

The core code is as follows:

Private void execute (String fileName) throws Exception {

Int hHeap = OS.GetProcessHeap ()

TCHAR buffer = new TCHAR (0, fileName, true)

Int byteCount = buffer.length () * TCHAR.sizeof

Int lpFile = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount)

OS.MoveMemory (lpFile, buffer, byteCount)

SHELLEXECUTEINFO info = new SHELLEXECUTEINFO ()

Info.cbSize = SHELLEXECUTEINFO.sizeof

/ / hide startup

Info.lpFile = lpFile

Info.nShow = OS.SW_HIDE

Boolean result = OS.ShellExecuteEx (info)

If (lpFile! = 0) {

OS.HeapFree (hHeap, 0, lpFile)

}

If (result==false) {

Throw new Exception ("Startup failed!")

}

}

Protected void startThirdExe () throws Exception {

/ / "notepad.exe" is the name of the program to be started

Execute ("notepad.exe")

/ / wait for NotePad.exe to start and initialize. You need to adjust the sleep time according to the actual situation.

Thread.sleep (1000)

/ / "Notepad" is the ClassName (Win32 level) of the nested program window, which can be viewed using tools such as Spy++.

Int notepadHwnd = OS.FindWindow (new TCHAR (0, "Notepad", true), null)

/ / & ~ WS_BORDER removes the embedded program border so that it looks more like an embedded program. If you need to display the border, delete the two lines of code

Int oldStyle = OS.GetWindowLong (notepadHwnd, OS.GWL_STYLE)

OS.SetWindowLong (notepadHwnd, OS.GWL_STYLE, oldStyle&~OS.WS_BORDER)

/ / composite is the control that hosts the started program

OS.SetParent (notepadHwnd, composite.handle)

/ / window maximization

OS.SendMessage (notepadHwnd, OS.WM_SYSCOMMAND, OS.SC_MAXIMIZE, 0)

}

At this point, I believe you have a deeper understanding of "how to embed the window of third-party programs in SWT programs". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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