hwndParent (HWND) - input

Parent-window handle.

prghwnd (PHWND) - output

Window handles.

Array of window handles. The array must contain (idLast - idFirst + 1) elements. The handle of a window, whose identity is WID (in the range idFirst to idLast), has a zero-based index in the array of (WID - idFirst). If there is no window for a window identity within the range, the corresponding element in the array is NULLHANDLE.

idFirst (ULONG) - input

First window identity value in the range (inclusive).

It must be greater or equal to 0 and less or equal to 0xFFFF.

idLast (ULONG) - input

Last window identity value in the range (inclusive).

It must be greater or equal to 0 and less or equal to 0xFFFF.

lWindows (LONG) - returns

Number of window handles returned.
• No window handles returned Other
  Number of window handles returned.

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