#include "BIDISP.H"
VOID CALLBACK BZoomScreenStep( HWND hWnd,
LPRECT lprScale,
ZOOMFLAG zoomflg,
LPZOOMSTRUCT zm,
LPZOOMSCREEN zc)
Description
This function recalculates scaling factor (zm->rScaleOut) for the function using the next or previous scaling value for decompress to screen function. 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 |
lprScale |
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.