Command Table Entry Types

Following is a list of command table entry types that can be used for constructing a command table. All of these types are defined as single word values.

Entry Type

Purpose

MCI_COMMAND_HEAD

First entry for each command. String identifies command. Longword contains MCI message constant.

MCI_CONSTANT

Introduces a set of constant command modifiers. String and longword identify structure member in which constant value is stored.

MCI_END_COMMAND

Last entry for each command. String and longword values are null.

MCI_END_COMMAND_LIST

Last entry in a command table. String and longword values are null.

MCI_END_CONSTANT

Ends a constant set. String and longword values are null.

MCI_FLAG

Defines a command modifier that does not require associated data structure storage. String and longword values identify the modifier.

MCI_HDC

Defines a command modifier that accepts an HDC argument. String defines modifier name. Longword identifies data structure member in which HDC value is stored. Also used to specify return type with MCI_RETURN.

MCI_HPAL

Defines a command modifier that accepts an HPAL argument. String defines modifier name. Longword identifies data structure member in which HPAL value is stored. Also used to specify return type with MCI_RETURN.

MCI_HWND

Defines a command modifier that accepts an HWND argument. String defines modifier name. Longword identifies data structure member in which HWND value is stored. Also used to specify return type with MCI_RETURN.

MCI_INTEGER

Defines a command modifier that accepts an integer argument. String defines modifier name. Longword identifies data structure member in which integer is stored. Also used to specify return type with MCI_RETURN.

MCI_RECT

Defines a command modifier that accepts a RECT argument. String defines modifier name. Longword identifies data structure member in which RECT value is stored. Also used to specify return type with MCI_RETURN.

MCI_RETURN

Declares that command returns a value. String value is null. Longword identifies the return value’s type, which can be MCI_INTEGER, MCI_HDC, MCI_HPAL, MCI_HWND, MCI_RECT, or MCI_STRING.

MCI_STRING

Defines a command modifier that accepts a string pointer argument. String in command table defines modifier name. Longword identifies data structure member in which string pointer argument is stored. Also used to specify return type with MCI_RETURN.

Entry Type	Purpose
MCI_COMMAND_HEAD	First entry for each command. String identifies command. Longword contains MCI message constant.
MCI_CONSTANT	Introduces a set of constant command modifiers. String and longword identify structure member in which constant value is stored.
MCI_END_COMMAND	Last entry for each command. String and longword values are null.
MCI_END_COMMAND_LIST	Last entry in a command table. String and longword values are null.
MCI_END_CONSTANT	Ends a constant set. String and longword values are null.
MCI_FLAG	Defines a command modifier that does not require associated data structure storage. String and longword values identify the modifier.
MCI_HDC	Defines a command modifier that accepts an HDC argument. String defines modifier name. Longword identifies data structure member in which HDC value is stored. Also used to specify return type with MCI_RETURN.
MCI_HPAL	Defines a command modifier that accepts an HPAL argument. String defines modifier name. Longword identifies data structure member in which HPAL value is stored. Also used to specify return type with MCI_RETURN.
MCI_HWND	Defines a command modifier that accepts an HWND argument. String defines modifier name. Longword identifies data structure member in which HWND value is stored. Also used to specify return type with MCI_RETURN.
MCI_INTEGER	Defines a command modifier that accepts an integer argument. String defines modifier name. Longword identifies data structure member in which integer is stored. Also used to specify return type with MCI_RETURN.
MCI_RECT	Defines a command modifier that accepts a RECT argument. String defines modifier name. Longword identifies data structure member in which RECT value is stored. Also used to specify return type with MCI_RETURN.
MCI_RETURN	Declares that command returns a value. String value is null. Longword identifies the return value’s type, which can be MCI_INTEGER, MCI_HDC, MCI_HPAL, MCI_HWND, MCI_RECT, or MCI_STRING.
MCI_STRING	Defines a command modifier that accepts a string pointer argument. String in command table defines modifier name. Longword identifies data structure member in which string pointer argument is stored. Also used to specify return type with MCI_RETURN.