MUiMessage Class Reference
[OpenMayaUI - API module for user interface]

#include <MUiMessage.h>

Inheritance diagram for MUiMessage:

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Collaboration diagram for MUiMessage:

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List of all members.

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Detailed Description

UI messages.

This class is used to register callbacks to track the deletion of UI objects.

The first parameter passed to the add callback method is the name of the UI that will trigger the callback.

The method returns an id which is used to remove the callback.

To remove a callback use MMessage::removeCallback.

All callbacks that are registered by a plug-in must be removed by that plug-in when it is unloaded. Failure to do so will result in a fatal error.

Public Types
typedef void(*	MStringFunction )(const MString &str, void *clientData)
	Pointer to a callback function which takes a string.
Static Public Member Functions
static MCallbackId	addUiDeletedCallback (const MString &uiName, MMessage::MBasicFunction func, void *clientData=NULL, MStatus *ReturnStatus=NULL)
static MCallbackId	addCameraChangedCallback (const MString &panelName, MMessage::MStringNode func, void *clientData=NULL, MStatus *ReturnStatus=NULL)
static MCallbackId	add3dViewDestroyMsgCallback (const MString &panelName, MUiMessage::MStringFunction func, void *clientData=NULL, MStatus *ReturnStatus=NULL)
static MCallbackId	add3dViewPreRenderMsgCallback (const MString &panelName, MUiMessage::MStringFunction func, void *clientData=NULL, MStatus *ReturnStatus=NULL)
static MCallbackId	add3dViewPostRenderMsgCallback (const MString &panelName, MUiMessage::MStringFunction func, void *clientData=NULL, MStatus *ReturnStatus=NULL)

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Member Typedef Documentation

typedef void(* MUiMessage::MStringFunction)(const MString &str, void *clientData)

Pointer to a callback function which takes a string.

Parameters:

[in]	str	Meaning depends upon the message for which the callback was registered.
[in]	clientData	Pointer to user-defined data supplied when the callback was registered.

Reimplemented from MMessage.

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Member Function Documentation

MCallbackId MUiMessage::addUiDeletedCallback	(	const MString &	uiName,
		MMessage::MBasicFunction	func,
		void *	clientData = NULL,
		MStatus *	ReturnStatus = NULL
	)			[static]

This method registers a callback for UI deleted messages.

The callback function will be passed any client data that was provided when the callback was registered.

Parameters:

[in]	uiName	the name of the UI object to register the callback for
[in]	func	the callback function clientData User defined data passed to the callback function param[in] clientData User defined data that will be passed to the callback function param[out] ReturnStatus status code

Returns:

Identifier used for removing the callback.

Status Codes:

• MS::kSuccess Operation succeeded
• MS::kUnknownParameter The named UI object could not be found
• MS::kInsufficientMemory No memory available
• MS::kFailure Error adding callback

MCallbackId MUiMessage::addCameraChangedCallback	(	const MString &	panelName,
		MMessage::MStringNode	func,
		void *	clientData = NULL,
		MStatus *	ReturnStatus = NULL
	)			[static]

This method registers a callback for cameras being changed in 3d views. The callback is called when the camera changes for the given panel, not when attributes on the panel's camera change.

The callback function will be passed any client data that was provided when the callback was registered.

Parameters:

[in]	func	the callback function panelName The name of the panel that had the camera change. camera The current camera used by the panel. clientData User defined data passed to the callback function
[in]	clientData	User defined data that will be passed to the callback function
[out]	ReturnStatus	status code

Returns:

Identifier used for removing the callback.

Status Codes:

• MS::kSuccess Operation succeeded
• MS::kUnknownParameter The named UI object could not be found
• MS::kInsufficientMemory No memory available
• MS::kFailure Error adding callback

MCallbackId MUiMessage::add3dViewDestroyMsgCallback	(	const MString &	panelName,
		MUiMessage::MStringFunction	func,
		void *	clientData = NULL,
		MStatus *	ReturnStatus = NULL
	)			[static]

This method registers a callback for when a particular 3d view gets destroyed. The callback is called before the destruction of the view.

The callback function will be passed any client data that was provided when the callback was registered.

Parameters:

[in]	func	the callback function panelName The name of the panel that contains the 3d view. clientData User defined data passed to the callback function
[in]	clientData	User defined data that will be passed to the callback function
[out]	ReturnStatus	status code

Returns:

Identifier used for removing the callback.

Status Codes:

• MS::kSuccess Operation succeeded
• MS::kUnknownParameter The named UI object could not be found
• MS::kInsufficientMemory No memory available
• MS::kFailure Error adding callback

Examples:

viewCallbackTest.cpp.

MCallbackId MUiMessage::add3dViewPreRenderMsgCallback	(	const MString &	panelName,
		MUiMessage::MStringFunction	func,
		void *	clientData = NULL,
		MStatus *	ReturnStatus = NULL
	)			[static]

This method registers a callback for when a particular 3d view is about to render it's contents. It is called before the scene is drawn, but after the background has been drawn.

The callback function will be passed any client data that was provided when the callback was registered.

Parameters:

[in]	func	the callback function panelName The name of the panel that contains the 3d view. clientData User defined data passed to the callback function
[in]	clientData	User defined data that will be passed to the callback function
[out]	ReturnStatus	status code

Returns:

Identifier used for removing the callback.

Status Codes:

• MS::kSuccess Operation succeeded
• MS::kUnknownParameter The named UI object could not be found
• MS::kInsufficientMemory No memory available
• MS::kFailure Error adding callback

Examples:

viewCallbackTest.cpp.

MCallbackId MUiMessage::add3dViewPostRenderMsgCallback	(	const MString &	panelName,
		MUiMessage::MStringFunction	func,
		void *	clientData = NULL,
		MStatus *	ReturnStatus = NULL
	)			[static]

This method registers a callback for when the 3d view is about to display it's rendered contents to the viewport. It is called for every refresh of the view, after the scene is drawn, but before any 2d adornments are drawn.

The callback function will be passed any client data that was provided when the callback was registered.

Parameters:

[in]	func	the callback function panelName The name of the panel that contains the 3d view. clientData User defined data passed to the callback function
[in]	clientData	User defined data that will be passed to the callback function
[out]	ReturnStatus	status code

Returns:

Identifier used for removing the callback.

Status Codes:

• MS::kSuccess Operation succeeded
• MS::kUnknownParameter The named UI object could not be found
• MS::kInsufficientMemory No memory available
• MS::kFailure Error adding callback

Examples:

viewCallbackTest.cpp.