Thanks for your reply can you please give more clarifications ?

Quote: how can I receive the message ? You _will_ receive the message, you will just not see the message. That is the basic concept of a Windows Service. They are UI-less, because of their design. If you want to see the message in real-time, then either use a UI-based framework, or consider reading the messages from an external source, such as a Queue that processes the messages as they come. [Queuing Windows Services work items using MSMQ, and live progress using WCF Net Named Pipe](https://www.codeproject.com/Articles/846586/Queuing-Windows-Services-work-items-using-MSMQ-and) The shit I complain about It's like there ain't a cloud in the sky and it's raining out - Eminem ~! Firewall !~

I have no problem with double-click event it is already working without any problem All what I need is to paste from clipboard to the active window and the focused textbox I tried SendMessage and PostMessage but it is not working with me JusT LeT YouR MinD WorK

I can detect the mouse clicks in/outside my application I just want to send WM_PASTE using API to windows so it will execute the paste command. ---------------------------- I need to do that because the user needs to take some data from the customer then enter it to a webpage more than one time and this takes a long time so I want to the user able to store the data in my application then paste them into the webpage faster, this will save a lot of time and of course a lot of money. I can handle it if the user used it with a control that don't allow pasting in on it. Now all what I need is to send the paste command to windows successfully. JusT LeT YouR MinD WorK