The Old New Thing

The forgotten common controls: The page scroller

The pager control was introduced with the common controls library that came with Internet Explorer 4.0 in order to assist in implementing scrolling menus on the Start menu and Favorites menu. (The Start menu and Favorites menu aren't really menus in the Win32 sense. They are custom controls written to act like menus; the fakemenu sample...

Why can't you say </script> in a script block?

Because it ends the script block, of course. Duh, what's so hard about that? Because if you have script that generates script, you'll find yourself caught out if you're not careful. For example, you can't say in a script block because the HTML parser will see the </SCRIPT> and conclude that your script block is over. In other ...
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Code

What does the CS_CLASSDC class style do?

Last time, I talked about the historical background for the CS_OWNDC class style and why it starts out sounding like a good idea but when you think about it some more turns out to be an awful idea. The CS_CLASSDC class style is the same thing, but worse, for it takes all the problems of CS_OWNDC and magnifies them. Recall that the CS_OWNDC ...

What does the CS_OWNDC class style do?

Recall that window DCs are most commonly used only temporarily. If you need to draw into a window, you call BeginPaint or, if outside of a paint cycle, GetDC, although painting outside of a paint cycle is generally to be avoided. The window manager produces a DC for the window and returns it. You use the DC, then restore it to its original ...