如何在 C# 中以编程方式填写另一个程序的弹出字段？

Question

I have a C++ program that is launched using cmd. After being launched, he show off a pop up where the user has to write his login/password.

I want to launch this program with another program (wrote in C#), I know how to do that with System.Diagnostics.Process.Start .

So my question is: ho can I fill the login/password's fields in my C# program ?

Answer:

@DmitriyZapevalov was right. Here is some usefull links that helped me:

• The user32 API doc
• How to use the user32 API in .NET (C# and VB)

Answer 1

You have to use Windows API through Interop:

1. Find popup's window handle ( HWND )
2. Find children fields handles
3. Setup your text in fields by handles ( SendMessage(WM_SETTEXT) )

You can find fields and windows by names or IDs.

Use Spy++ to investigate popup window layout.