LAnnotation::GetROP2
#include "ltwrappr.h"
virtual L_UINT LAnnotation::GetROP2()
Gets a constant that indicates which binary raster operation (ROP2) code is being used for one or more objects. This function is available in the Document/Medical Toolkits.
Returns
The ROP2 code. Possible values are:
Value |
Meaning |
ANNROP2_COPY |
[0x0000] Draw the object using the object's color |
ANNROP2_AND |
[0x0001] Draw the object, performing an AND operation between the object's color and the background color. This creates a highlight effect. White objects become transparent. |
ANNROP2_XOR |
[0x0002] Draw the object, performing an XOR operation between the object's color and the background color. This creates an inverted effect. Black objects become transparent. |
Default is ANNROP2_COPY.
Comments
The ROP2 codes specify how pen or brush colors are to be combined with the colors in the image.
The LAnnotation::GetROP2 function is valid only for the following object types:
Crossproduct
Curve
Closed Curve
Ellipse
Freehand
Freehand Hotspot
Line
Pointer
Point
Polygon
Polyline
Polyruler
Protractor
Rectangle
Ruler
Stamp (including the Rubber Stamp)
TextPointer
In addition, the Automation object stores ROP2 settings along with the other object default settings
If you try to use the LAnnotation::GetROP2 function with an object that does not support it, the method returns Error (-16), which is "Feature not supported".
Call the LAnnotation::SetROP2 function to set the ROP2 code being used for one or more annotation objects.
Required DLLs and Libraries
LTANN For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
See Also
Example
L_INT LAnnotation_GetROP2Example(LAnnotation& LeadAnn) { L_INT nRet =SUCCESS; L_UINT uRop2; // ROP2 code // Get the current ROP2 code uRop2 = LeadAnn.GetROP2(); // if the code is not ANNROP2_AND, make it so if(uRop2 != ANNROP2_AND) nRet = LeadAnn.SetROP2( nRet = ANNROP2_AND, ANNFLAG_RECURSE); // set ROP2 code return nRet; }