SetWorldTransform Question

If i had a bunch of graphics on the screen at one time and i wanted to use SetWorldTransform to make only one object rotate, would i have to have that object in a seprate DC over the main DC to make only it rotate and not any thing else.

thanks for the help

Basically you just need to set the transform then do your rendering then reset the transform. Does that make sense?

1. Render all of the objects
2. Set your matrix transform
3. Render your RECT
4. Reset matrix transform

MSDN defines SetWorldTransform as "The SetWorldTransform function sets a two-dimensional linear transformation between world space and page space for the specified device context."

so that to me sounds like it will turn a whole DC and not just individual graphical objects.

so what is was asking is, will i need a seprate DC just for the rotated object so every thing else will not rotate, or am i missing something about the definition.

SetWorldTransform will only transform what you send to it. It will not transform every pixel in the DC.

thanks man :D