This function sets the new zoom values.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_dspl_zoom_set(
[IN] HIGEAR hIGear,
[IN] DWORD dwGrpID,
[IN] AT_MODE nZoomMode,
[IN] DOUBLE dHZoom,
[IN] DOUBLE dVZoom
);
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Arguments:
| Name | Type | Description |
| hIGear | HIGEAR | Image handle to where set zoom options. |
| dwGrpID | DWORD | Identifier of group in which to set zoom options. |
| nZoomlMode | AT_MODE |
New value of ZoomMode to set. Possible value is combination from one of the horizontal zoom flags:
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| dHZoom | DOUBLE | New value of ZoomValueH to set. Any positive number is accepted. Value 1.0 means that the image is zoomed by 100% or displayed in its actual size. |
| dVZoom | DOUBLE | New value of ZoomValueV to set. Any positive number is accepted. Value 1.0 means that the image is zoomed by 100% or displayed in its actual size. |
Return Value:
Returns the number of ImageGear errors that occurred during this function call.
Supported Raster Image Formats:
All pixel formats supported by ImageGear Professional.
Sample:
Display, MFC, FILTERS, ASCII, PAN, ART, Vector
Example:
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HIGEAR hIGear; /* HIGEAR handle of image */ DWORD nGrpID; /* display group identifier */ ... /* set aspect ratio as not fixed and zoom image by 150% and 200% for horizontal and vertical directions respectively */ IG_dspl_layout_set( hIGear, nGrpID, IG_ASPECT_MODE, NULL, NULL, NULL, 0, 0, IG_DSPL_ASPECT_NOT_FIXED, 0.0 ); IG_dspl_zoom_set( hIGear, nGrpID, IG_DSPL_ZOOM_H_FIXED| IG_DSPL_ZOOM_V_FIXED, 1.5, 2.0 ); ... /* the same as before but only for horizontal direction; vertical direction is zoomed according to current fit method and device rectangle */ IG_dspl_zoom_set( hIGear, nGrpID, IG_DSPL_ZOOM_H_FIXED| IG_DSPL_ZOOM_V_NOT_FIXED, 1.5, 2.0 ); ... |
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