Waitrud Weber’s blog

things and reminders for memories

windows-make: Using a picture buffer.

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    region - -
background  a small band for the wave graph

 

a small rect only

(spacified part))

   
         
objects rectangle as cursol 

a small rect only

(spacified part)

   
         
         

 

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    region - -
background poisson disk sampling

whole window

(the entire region)

   
         
objects rectangle as cursol 

a small rect only

(spacified part)

   
         
         

 

*InvalidateRect

learn.microsoft.com

* 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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