DTM_GETRANGE message

Gets the current minimum and maximum allowable system times for a date and time picker (DTP) control. You can send this message explicitly or use the DateTime_GetRange macro.

Parameters

wParam

Must be zero.

lParam

A pointer to a two-element array of SYSTEMTIME structures.

Return value

Returns a DWORD value that is a combination of GDTR_MIN or GDTR_MAX. The first element of the SYSTEMTIME array contains the minimum allowable time if GDTR_MIN is set. The second element of the SYSTEMTIME array contains the maximum allowable time if GDTR_MAX is set.

Remarks

The date and time picker displays only dates/times that fall within the specified range, preventing the user from selecting a date and time that falls outside the range. If the DTM_SETSYSTEMTIME message specifies a date and time that falls outside the range, it will fail.

Requirements