How can I remove the Close button from my window caption?

This article discusses methods to remove the Close button from a window caption in a Windows application. It explains the implications of removing the System menu and provides code snippets to disable the Close button while retaining Minimize and Maximize options.

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Occasionally, somebody wants to create a window without a Close button.

The only way to get rid of the Close button is not to have a System menu at all: Remove the WS_ SYS­MENU style from the window. But that also gets rid of the Minimize and Maximize buttons, so it’s kind of drastic.

If you want a System menu, or if you want Minimize and Maximize buttons, you can at least disable the Close button by disabling the SC_CLOSE menu item.

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