Brew MP 1.0.2
This function is used to specify the raster operation for an image widget's
bitmap. The raster operation specifies how the pixels of a bitmap will be
transformed when they are transferred to the display. For example, a raster
operation of AEE_RO_COPY would copy the pixels of the source bitmap directly
to the screen, regardless of the pixels in the destination graphics port.
More complex behaviors can be performed by specifying various raster
operations, each of which identifies the logical relation between the source
image and its destination. Illustrating, again, a raster operation of
AEE_RO_OR would logically 'or' each pixel of the source bitmap with the
corresponding pixel of the destination.
See the description of IPARM_ROP in AEEImage.h for a full description of the
available transfer modes and constants that can be used as raster ops.
[in] Pointer to the IWidget object.
[in] Identifies the raster operation to be applied when transferring
the pixels of the image widget's bitmap to those in the destination
- IWidget_SetROP() calls IWidget_SetImageParm() to access the IPARM_ROP image
attribute. This has the net effect of processing an EVT_WDG_SETPROPERTY event
through the widget hierarchy.