DefMDIChildProc function user32

int DefMDIChildProc(
  1. int hWnd,
  2. int uMsg,
  3. int wParam,
  4. int lParam,
)

Provides default processing for any window message that the window procedure of a multiple-document interface (MDI) child window does not process. A window message not processed by the window procedure must be passed to the DefMDIChildProc function, not to the DefWindowProc function.

LRESULT DefMDIChildProcW(
  HWND   hWnd,
  UINT   uMsg,
  WPARAM wParam,
  LPARAM lParam
);

Implementation

int DefMDIChildProc(int hWnd, int uMsg, int wParam, int lParam) =>
    _DefMDIChildProc(hWnd, uMsg, wParam, lParam);