Local Device Context

[SteveD73]

Hi

I have created a function with the following prototype:

CDC* GetSquares();

This function needs to create a CDC with is 100 by 100 pixels large. In this CDC the function needs to to draw a single square. Once the sqaure the is drawn the function should return the CDC.

How can I create a CDC 100 by 100 pixels large within this function?

The function returns the CDC to OnDraw and then the CDC is BitBlt directly to the screen.

I have been trying to use CreateCompatibleBitmap() and then selecting this into my CDC. But this does not work.

Any help on this would be great.

Thank you.

 

[hwnd216]

if ur using the fucntion in ondraw whydont u send the pDC in OnDraw fuction as parameter to GetSquare and then u can directly draw to the DC or u can create a compatible bitmap and return the bitmap and then bitblit it the second is round about way i prefer the first one