L_BM_ADDNOISE
Send this message to add random pixels to an L_BITMAPCLASS window's bitmap. You can specify the percentage of coverage and the color plane.
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Parameter |
Meaning |
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wParam |
Specifies whether the window should be redrawn to reflect the image changes. Use 1 to redraw the window, or 0 not to redraw it. |
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lParam |
The low order of the lParam parameter specifies the channel. Possible values are: |
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Value |
Meaning |
|
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CHANNEL_MASTER |
[0] All channels. |
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CHANNEL_RED |
[1] Red channel only. |
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CHANNEL_GREEN |
[2] Green channel only. |
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CHANNEL_BLUE |
[3] Blue channel only. |
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The high order is the percentage of coverage, expressed in tenths of a percent. Valid values are 0 to 1000. |
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Returns
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SUCCESS |
Function was successful. |
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< 0 |
An error occurred. Refer to Return Codes. |