lFlags
Flags that specify how to apply the effect, and which layout pattern to use for the noise. You can use a bit wise OR (|) to specify one flag from each group.
The following flags specify how to apply the effect:
|
Value |
Meaning |
|
PRL_PURE |
[0x0000] Produce noise as a new bitmap. |
|
PRL_COMBINE |
[0x0001] Combine the noise and the bitmap pixels using the lOpacity value. |
|
PRL_DIFFERENCE |
[0x0002] Apply the difference between the noise and the bitmap pixels. |
The following flags indicate which layout pattern to use for the noise:
|
Value |
Meaning |
|
PRL_CIRCLE |
[0x0000] Lay out the noise in concentric circles. Set the center for the circle using lxCircle and lyCircle. |
|
PRL_LINE |
[0x0010] Lay out the noise in lines at a 45 degree angle. |
|
PRL_RANDOM |
[0x0020] Lay out the noise randomly. |