api:dk11:java:tatukgis.jdk.tgis_layerpixel.lockpixels_tgis_extent_tgis_cscoordinatesystem_boolean
Table of Contents
TGIS_LayerPixel.LockPixels(TGIS_Extent, TGIS_CSCoordinateSystem, bool) method
DK11 for Java | tatukgis.jdk.TGIS_LayerPixel.LockPixels | Overloads | Constructors | Fields | Methods | Properties | Events
Locks a fragment of the pixel layer for updating.
Syntax
// Java public TGIS_LayerPixelLock LockPixels( TGIS_Extent _ext, TGIS_CSCoordinateSystem _cs, bool _writable );
// Oxygene public function LockPixels( _ext : TGIS_Extent; _cs : TGIS_CSCoordinateSystem; _writable : Boolean ) : TGIS_LayerPixelLock; virtual;
Parameters
| Name | Type | Description |
|---|---|---|
| _ext | TGIS_Extent | area to be locked; if bigger then layer extent then will be truncated to layer extent |
| _cs | TGIS_CSCoordinateSystem | coordinate system of _cs; if nil then same as layer CS |
| _writable | bool Boolean | if true than layer will post back any changes in locked area; if write is not possible then TGIS_LayerPixelLock.Writable will be set accordingly |
Result
| Type | Description |
|---|---|
| TGIS_LayerPixelLock | locked area |
Remarks
Must be paired with UnlockPixels.
To speed-up operation, the function can return a larger area than requested. Use Bounds property of result value to obtain actual scope.
References
2023/02/22 01:33