MFC Data Type)

BOOL: Boolean value (Boolean value, TRUE or FALSE)

BSTR: 32-bit character pointer

BYTE: an 8-bit integer with no plus or minus signs

COLORREF: 32-bit value, representing a color value

DWORD: 32-bit integer without plus or minus signs

LONG: 32-bit integer with positive and negative numbers

LPARAM: 32-bit value, which is a parameter of the window function or callback function.

LPCSTR: 32-bit pointer, pointing to a constant string

LPSTR: 32-bit pointer, pointing to a string

LPCTSTR: 32-bit pointer, pointing to a constant string. This string can be transplanted to Unicode and DBCS (dubyte Character Set)

LPTSTR: 32-bit pointer, pointing to a string. This string can be transplanted to Unicode and DBCS (dubyte Character Set)

LPVOID: 32-bit character pointer pointing to an unspecified type of data

LPRESULT: 32-bit value, which is returned by the window function or callback function.

UNIT: In Win16, It is a 16-bit integer without plus or minus signs. in Win32, It is a 32-bit integer without plus or minus signs.

WNDPROC: 32-bit pointer, pointing to a window function

WORD: A 16-bit integer without a plus or minus sign

WPARAM: a parameter of the callback function of the window function. It is 16-bit in Win16 and 32-bit in Win32.

POSITION: A value that represents the POSITION of an element in a collection object (such as an array or a linked list. Usually used with MFC collection classes

LPCRECT: 32-bit pointer pointing to a non-edge RECT Structure

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