| Gives the X location of the last click relative to the control within which the click occurred. The location is always expressed in the Unit of Measurement that is in effect. | 
| Syntax: | ClickCX() | 
| Parameters: | None | 
| Returns: | Numeric value | 
| Example: | ClickCX() returns the X coordination of where the user clicks the mouse relative to a control. | 
| Note: | In Online tasks, when clicking on a Tab control, the ClickCX function returns the layer number of the clicked tab. | 
| Platform specific: | This function is not supported for mobile devices. | 
| See also: | ClickCY, ClickWX, ClickWY The Online and Rich Client Samples projects (program IF04 and RIF04) |