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Where is ALT key defined? - C++ Forum - Cplusplus.com

::SendMessage(hwnd, WM_KEYDOWN, VK_ALT,0); Compiler says: C:\MyInspect\MyMain.cpp|155|error: 'VK_ALT' was not declared in this scope|

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查詢 「VK_ALT」的人也找了：

  1. VK_ALT
    2.
  2. GetKeyState
    3.
  3. WM_CHAR
    4.
  4. WM_KEYDOWN
    5.
  5. GetAsyncKeyState
    6.
  6. SendInput
    7.
  7. ; keycode
    8.
  8. Vk_back
    9.