Can not show control in the position of the mouse click

[David_Lee]

Hello,

Hope by the "NewCtrl()" function to generate a picture ring control on a canvas when clicking the canvas control.

Using the "GetRelativeMouseState(panelHandle, CANVAS_ID, &xCoor, &yCoor, NULL, NULL, NULL); " to get the mouse click coordinate, then using NewCtrl() to generate the control, but the picture ring cannot be placed on the click position. How to get the right position?

David

[RobertoBozzolo]

This is the expected behaviour: GetRelativeMouseState gives coordinates referred to the canvas (command help clarifies it: "xCoordinate and yCoordinate return the position of the mouse relative to the top and left coordinates of a specific control"), while you must set the control in absolute panel coordinates.

If you are handling a click event, you can use eventData parameters that holds mouse coordinates, this way:

        controlID = NewCtrl (panel, CTRL_NUMERIC_LS, 0, eventData1, eventData2);