XPLMDefs

These bitfields define modifier keys in a platform independent way. When a key is pressed, a series of messages are sent to your plugin. The down flag is set in the first of these messages, and the up flag in the last. While the key is held down, messages are sent with neither flag set to indicate that the key is being held down as a repeated character. The control flag is mapped to the control flag on Macintosh and PC. Generally X-Plane uses the control key and not the command key on Macintosh, providing a consistent interface across platforms that does not necessarily match the Macintosh user interface guidelines. There is not yet a way for plugins to access the Macintosh control keys without using #ifdefed code.

XPLMCursorStatus describes how you would like X-Plane to manage the cursor. See XPLMHandleCursor_f for more info.

When the mouse is clicked, your mouse click routine is called repeatedly. It is first called with the mouse down message. It is then called zero or more times with the mouse-drag message, and finally it is called once with the mouse up message. All of these messages will be directed to the same window; you are guaranteed to not receive a drag or mouse-up event without first receiving the corresponding mouse-down.