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Sending WM_MOUSEDOWN instead of useing MouseClick

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Hi I am trying to send message to window using windows API.

I looks like _SendMessage($hWnd, $WM_MOUSEMOVE, $MK_LBUTTON, $lParam)

In spy I see that window does receive message with correct parameters but there is no responce. (Like button is not clicked...)

Using MouseClick makes it work, but I need to have a number of windows working simultaneously without switching beetwen them.

I would appreciate any help on the subject.


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Welcome to the AutoIt forum. :(

I see that on the ControlClick page in the Help file there is this warning:

Some controls will resist clicking unless they are the active window. Use the WinActivate() function to force the control's window to the top before using ControlClick().

Although not privy to the inner workings of Autoit, it would not surprise me if ControlClick used the same _SendMessage call that you are using. If so then I imagine that you are falling foul of the same restriction. :)

Not a great help in solving your problem, but at least it might explain why it is happening.

I will try and be more helpful next time! :)


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ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
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Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area


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Without code, we cannot guess. But I would suggest you are not using the correct message. That message simply means the mouse has moved over some window coordinates (specified by lParam) with the left button down. This does not equal a click. Also, this message must be sent to the parent window, not the button.

You are far better off sending the button a BM_CLICK message directly. MSDN can show you how to use this message. It sends the button a WM_LBUTTONDOWN and WM_LBUTTONUP message, and sends the parent window the BN_CLICKED notification.


better answer

Edited by wraithdu

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