External program used excel, if you click on the click of a button to send a message through the simulation, excel this call can not be started.

[User 11249002]

sorry,my english is not good enough.

[Lost User]

Do you have a colleague who could translate for you?

[User 11249002]

Sorry, I am the only one，incidentally, I'm Chinese.English is not our official language，I tried again to translate。

[Lost User]

You could try posting in http://www.codeproject.com/Forums/1580230/General-Chinese-Topics.aspx[^], where you can write in your own language.

[User 11249002]

A.exe is my own program,B.exe is not my own program. B.exe has a button, click it, and will call to EXCEL! Now, my question is: if click this button to manually, EXCEL will be normal calls.---(OK) But if use my program(A.exe),the Sendmessage function sends a keystroke messages (WM_KEYDOWN WM_SYSKEYDOWN) on the button, EXCEL will call fails.---(NG) I'm sure it: Sendmessage function keystroke messages is sent successfully!

[User 11249002]

Hello, can you understand what I said now ??

[Lost User]

You need to be sure that the messages are exactly what the program uses to cause the button press.

[User 11249002]

yes,i am sure.

[Lost User]

Well it does not appear to be working, so there must be something still wrong.

[User 11249002]

Thank you, I have solved this problem.