Vcl.Controls.TDragObjectEx Methods

AfterConstruction public

Assign public Copies the properties of another drag control object.

BeforeDestruction public Allows the application to detect that the drag object needs to be freed.

CheckDisposed protected

ClassInfo public Returns a pointer to the run-time type information (RTTI) table for the object type.

ClassName public Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).

ClassNameIs public Determines whether an object is of a specific type.

ClassParent public Returns the type of the immediate ancestor of a class.

ClassType public Returns the class reference for the object's class.

CleanupInstance public Performs finalization on long strings, variants, and interface variables within a class.

Create public

DefaultHandler public Provides the interface for a method that processes message records.

Destroy public

Dispatch public Calls message-handling methods for the object, based on the contents of the Message parameter.

DisposeOf public DisposeOf forces the execution of the destructor code in an object.

Equals public Checks whether the current instance and the Obj parameter are equal.

FieldAddress public Returns the address of a published object field.

Finished protected Responds when the mouse is released indicating the drag operation is complete.

Free public Destroys an object and frees its associated memory, if necessary.

FreeInstance public Deallocates memory allocated by a previous call to the NewInstance method.

GetDisposed protected Getter for the Disposed property.

GetDragCursor protected Indicates which cursor should be displayed in response to mouse moves.

GetDragImages protected Returns an image list containing the image to be displayed while dragging.

GetHashCode public Returns an integer containing the hash code.

GetInterface public Retrieves a specified interface.

GetInterfaceEntry public Returns the entry for a specific interface implemented in a class.

GetInterfaceTable public Returns a pointer to a structure containing all of the interfaces implemented by a given class.

GetName public Returns a string that identifies the drag operation.

HideDragImage public Provides the interface for a method that hides the current drag image.

InheritsFrom public Determines the relationship of two object types.

InitInstance public Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.

Instance public Returns the instance (module) handle of the EXE or DLL that created the drag object.

InstanceSize public Returns the size in bytes of each instance of the object type.

MainWndProc protected Receives Windows messages for the drag object.

MethodAddress public Returns the address of a class method by name.

MethodName public Returns the name of a class method by address.

NewInstance public Allocates memory for an instance of an object type and returns a pointer to that new instance.

QualifiedClassName public Returns the qualified name of the class.

SafeCallException public Handles exceptions in methods declared using the safecall calling convention.

ShowDragImage public Provides the interface for a method that shows the current drag image.

ToString public Returns a string containing the class name.

UnitName public Returns the name of the unit where the class is defined.

UnitScope public Returns the class's unit scope.

WndProc protected Processes messages received by the drag object.