#include "BIDISP.H"
VOID CALLBACK BZoomStep(HWND hWnd,
LPRECT lprScale,
ZOOMFLAG zoomflg,
LPZOOMSTRUCT zm
LPDISPLAYSTRUCT cb)
Description
This function recalculates scaling factor (zm->rScaleOut) for the function using the next or previous scaling value. zoomflg (see BZoomStart function) defines the direction of the zooming. The new scaling factor is returned in the zm->rScaleOut structure. The origo of the image remains unchanged.
Parameters
|
HWND |
hWnd |
Window handle to display image. |
|
LPPOINT |
lpMouse |
Coordinates of the mouse pointer. |
|
ZOOMFLAG |
zoomflg |
Determines the operation of zoom. |
|
LPZOOMSTRUCT |
zm |
Zoom structure created by BzoomStart function |
|
LPZOOMSCREEN |
zc |
Display information structure of decompress to screen function. |
Return values
None.
Requirements
Header : Declared in BIDisp.h; include BIDisp.h.
Library : Use BIDisp.lib.
DLLs : BIDisp.dll.