Using Images and Graphics Efficiently in Windows Forms

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C#

Just a quick one, I've recently created a project for a windows mobile phone and pocket pc and wanted to know how I could make the use of my images more efficient as I know these devices aren't the most powerful machines in the world.

I have a series tablelayoutpanels to keep the structure of my forms, however I was wandering aside from the cells in the panels with fixed sizes, that contain images that are created at that resolution.

What is the best way to deal with parts of the form that will need to be resized? For example a background image to a horizontal tool bar running along the top of a form, this will need to be resized as the form is resized horizontally.

Perhaps I'm going in completely the wrong direction and I should be using gradient graphics if possible and only use graphics where necessary. I've been reading about scaling and using gradients in the documentation but just wanted some opinions on this.

Thanks in advance.