问题
If my understanding is correct: * Classes compile into obj files. * Libs are collections of obj files.
What are .res files? Are they like libs, or is there a difference?
回答1:
.res files are compiled Windows resources (just like .obj are compiled C++ source code). They contain bitmaps, icons, etc.
In particular, the C++Builder IDE will automatically maintain a .res file containing the application icon and version info that you've set up under Project -> Options -> Application and Project -> Options -> Version Info.
回答2:
.res files are compiled resource scripts (.rc) Can be edited with: http://www.resedit.net/
More on resource scripts: http://en.wikibooks.org/wiki/Windows_Programming/Resource_Scripts
Here is a list of common resources:
Drop-down Menus
Popup Menus
Text Strings
Keyboard Accelerators (keypress combinations, such as [Ctrl]+[C] to copy text)
Icons
Bitmap Images
Dialog Boxes
Version information
Mouse Cursors
How to write a resource script: http://mirrors.zoreil.com/webclub.kcom.ne.jp/ma/colinp/win32/resources/script.html
来源：https://stackoverflow.com/questions/14898393/c-builder-difference-between-lib-and-res