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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.

Required DLLs and Libraries

LTDIS LTDLG LTEFX LTFIL LTIMG LTSCR LTTWN For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions:

Class Members

Example

For an example, refer to LBitmapWindow::CreatePanWnd.