From wikilazarus:

TWinControl.PopupMenu showing

Showing the popup menu of a windowed control is implemented using the native behavior of the Windows CE platform for touch screens. The user holds the pointer in a given control for a certain amount of time and the popup shows. This is implemented on the WM_LBUTTONDOWN message handler by calling SHRecognizeGesture.

For more details see:

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http://svn.freepascal.org/cgi-bin/viewvc.cgi?view=rev&root=lazarus&revision=13728

I download the patch (wincecallback.inc) from Paul Michell, which implements showing popup menus from mouse gestures on wince, but I do not know how to use it.

Best regards.
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2008/10/1 Usuario An?nimo :

I download the patch (wincecallback.inc) from Paul Michell, which implements showing popup menus from mouse gestures on wince, but I do not know how to use it.

To use the changes in the patch you should use a lazarus version which contains this patch, and not download it and somehow use it directly.

The latest stable release (0.9.24) does not contain the patch, so you need to use a snapshot from the latest 0.9.25, as explained here:

http://wiki.lazarus.freepascal.org/Windows_CE_Interface#Using_the_snapshot_add-on_installer

A new release (0.9.26) is also very near.