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region | - | - | ||
background | a small band for the wave graph |
a small rect only (spacified part)) |
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objects | rectangle as cursol |
a small rect only (spacified part) |
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region | - | - | ||
background | poisson disk sampling |
whole window (the entire region) |
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objects | rectangle as cursol |
a small rect only (spacified part) |
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*InvalidateRect
* as written
If the bErase parameter is TRUE for any part of the update region, the background is erased in the entire region, not just in the specified part.
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How is the background and also the entire region?
That effects in animation will express in the size of picture buffer.
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