Classes and Member Functions > LBitmapWindow > LBitmapWindow Member Functions > LBitmapWindow::OnZoom

LBitmapWindow::OnZoom

#include "ltwrappr.h"

virtual L_VOID LBitmapWindow::OnZoom(uZoomPercent)

L_UINT uZoomPercent;

the zoom percent

This function is called whenever a zoom operation is requested on the bitmap window.

Parameter	Description
uZoomPercent	The zoom percent. The minimum value is 1.

Returns

None

Comments

Override this function to be notified of any zooming on the displayed bitmap.

A zoom can be requested by the following:

user presses one of the keys defined for zooming
user draws a rectangle while the current tool type is set to TOOL_ZOOMRECT
user clicks the mouse in the class object's window while the current tool type is set to TOOL_ZOOM_ON_MOUSECLICK

If the zoom occurs because the user has zoomed using the TOOL_ZOOMRECT tool, the zoom percent is updated. You can call LBitmapWindow::GetZoomPercent to get the zoom percent currently used to display the image.

LBitmapWindow::OnZoom

Returns

Comments

Example