Simulate Left Mouse Button (VK_LBUTTON)

How could I simulate a left-click with a mouse. I have no trouble using keys (sendkeys project from codeproject), but I can't get it to simulate a left-click.

Can anyone help me?

http://p2p.wrox.com/topic.asp?TOPIC_ID=38639

The OP is using .NET, but I believe he's attempting calls out of a win32 api dll so it should be enough to send you in the right direction.

Quote:

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Originally Posted by Vicious

The OP is using .NET, but I believe he's attempting calls out of a win32 api dll so it should be enough to send you in the right direction.

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It's the wrong direction (explanations in MSDN)
The right method is SI()

Since you posted in the Windows forum and not the C# forum, I'll assume you want to simulate a left mouse button using Win32 API.

With that said, give the following a try to see if it works:

Code:

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  INPUT    Input={0};
  // left MB down
  Input.type      = INPUT_MOUSE;
  Input.mi.dwFlags  = MOUSEEVENTF_LEFTDOWN;
  SendInput(1,&Input,sizeof(Input));
  // lef MB up
  ZeroMemory(&Input,sizeof(INPUT));
  Input.type      = INPUT_MOUSE;
  Input.mi.dwFlags  = MOUSEEVENTF_LEFTUP;
  SendInput(1,&Input,sizeof(Input));

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