GetwindowoffsetEx in windows XP and up

I have an visaul object up and running GetwindowoffsetEx moved the canvas around

But I cannot change the size of the canvas to my needs

Like should I not beable to change the canvas size for a A4-A3 print开发者_开发技巧er or to a picture size can this be done using the windows API I do not seem to get the instructions to do this.

I take it that if I want a Zoom, I strech draw from another cavuas

am I asking the obvious in all this.

Lex Dean

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I'm struggling to understand exactly what I need but you seem to want to map between two coordinate spaces in GDI.

Whilst you can use the fully general SetWorldTransform(), I suspect you are better off with the following functions:

• SetWindowOrgEx(), SetWindowExtEx()
• SetViewportOrgEx(), SetViewportExtEx()

The MSDN documentation also includes a full list of functions related to coordinate space transformations.