Called to notify the main window of changes to the associated Pan Window.


#include "ltwrappr.h"

virtual L_VOID LAnnotationWindow::PanWndCallBack(uFlag, prcPan)


L_UINT uFlag

Flag indicating the reason for the Pan Window notification. Possible values are:

Value Meaning
PANWIN_CREATED [0] Pan Window was created.
PANWIN_UPDATED [1] Pan Window was updated/repainted.
PANWIN_DESTROYED [2] Pan Window was destroyed.
PANWIN_MOVED [3] Pan Window was moved.
PANWIN_REPAINTED [4] Pam Window was repainted.


Pointer to a RECT that contains the current coordinates of the Pan Rect in 1:1 zoom factor, when uFlag = PANWIN_UPDATED. You must convert these coordinates to match your main window's current zoom factor.




This function will be called when the Pan Window updates itself when responding to end-user input, or when the Pan Window repaints itself after being invalidated.

You can use this callback as a notification that the Pan Window has been updated by the end-user. You can also use this function to do your own custom painting in the Pan Window.

LAnnotationWindow overrides this function to be notified of Pan Window notifications. This allows the class object to render the annotations to the PanWindow. If you override this function then you must call the parent-class implementation of this function after doing your own processing to allow the annotation window to do its default processing.

Required DLLs and Libraries


Win32, x64.

See Also


For an example, refer to LAnnotationWindow::OnZoom.

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