Why do I get a WM_CHAR message with char code 3 when I press Ctrl C?-CodePudding

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Why do I get a WM_CHAR message with char code 3 when I press Ctrl C?

Time：02-16

I have a simple Win32 desktop application listening the keyboard message.
When I press Ctrl C, I got the following message sequence:

WM_DOWN  Ctrl
WM_DOWN  C
WM_CHAR wParam=3
WM_UP  Ctrl
WM_UP  C

Why do I get a WM_CHAR message whose char code is 3?

CodePudding user response：

Historical. "C" is the third letter of the alphabet. Ctrl-B is 2.