>>Where do I find the values for the Messages ie. CB_FINDSTRING is H14C but I need to know what CB_SHOWDROPDOWN is, as well as some others?
>
>Chad,
>One of the tools that you can install as part of Visual Studio 6 is the API Text Viewer. You can find most of the WinAPI functions and constants there.
>

The API text Viewer does define all of them, but you need to know the name of the message you want before you can use it. A good source of what messages are available is Dan Appleman's first VB API book, which includes a number of tables in the appendix that list the messages, their values, what they do, and what the wParam and lParam values for those messages do.

>Also, if you have VC++, you can look through the .H files. You might also try searching msdn.microsoft.com.

WINUSER.H lists the various Windows Message constants; it doesn't explain how to use them, which is why I keep telling people to buy Appleman's book...