Classes and Member Functions > LBitmapWindow > LBitmapWindow Member Functions > LBitmapWindow::PanWndCallBack

LBitmapWindow::PanWndCallBack

#include "ltwrappr.h"

virtual L_VOID LBitmapWindow::PanWndCallBack(uFlag, prcPan)

L_UINT uFlag;	flag that indicates the reason for the notification
LPRECT prcPan;	pointer to the Pan RECT

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

Parameter	Description
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_REPAINT	[4] Pan Window was repainted.
prcPan	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.

Returns

None

Comments

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.

LBitmapWindow::PanWndCallBack

Returns

Comments

Example