WTL-TreeView如何显示ToolTip

Alpha WTL Sample ---------------- This sample shows how to use 32-bit (alpha channel) images with toolbars and command bars. It also displays them only if running on Windows XP with themes enabled, while it displays standard 4-bit images in other cases. Cut and Copy commands toggle enable/disable state for the Paste command, just to show how images look disabled. Subdirectories Release and Debug contain the manifest file, alpha.exe.manifest which is required to use 32-bit (alpha) images. If you use Windows XP with themes, you can rename or delete the manifest file to disable alpha images. -end-