Vcl.Controls.TControlCanvas Methods
InheritedProtected
AfterConstruction | public | Responds after the last constructor has executed. |
AngleArc | public | Draws an arc on the image along the perimeter of the circle defined by the parameters. |
Arc | public | Draws an arc on the image along the perimeter of the ellipse bounded by the specified rectangle. |
ArcTo | public | |
Assign | public | Copies the contents of another similar object. |
AssignTo | protected | Copies the properties of an object to a destination object. |
BeforeDestruction | public | Responds before the first destructor executes. |
BrushCopy | public | Copies a portion of a bitmap onto a rectangle on the canvas, replacing one of the colors of the bitmap with the brush of the canvas. |
Changed | protected | Called when the canvas is changed. |
Changing | protected | Called before the canvas is changed. |
CheckDisposed | protected | |
Chord | public | Draws a closed figure represented by the intersection of a line and an ellipse. |
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. |
CopyRect | public | Copies part of an image from another canvas into the canvas. |
Create | public | Creates a new TControlCanvas object. |
CreateHandle | protected | Creates the underlying Windows device context object attached to the control owning the current canvas object. |
DefaultHandler | public | Provides the interface for a method that processes message records. |
DefineProperties | protected | Provides an interface for a method that reads and writes otherwise unpublished data. |
Destroy | public | Destroys an instance of TControlCanvas. |
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. |
Draw | public | Renders the graphic specified by the Graphic parameter on the canvas at the location given by the coordinates (X, Y). |
DrawFocusRect | public | Draws a rectangle in the style used to indicate that the object inside the rectangle has focus. |
Ellipse | public | Draws the ellipse defined by a bounding rectangle on the canvas. |
Equals | public | Checks whether the current instance and the Obj parameter are equal. |
FieldAddress | public | Returns the address of a published object field. |
FillRect | public | Fills the specified rectangle on the canvas using the current brush. |
FloodFill | public | Fills an area of the canvas using the current brush. |
FrameRect | public | Draws a rectangle using the Brush of the canvas to draw the border. |
Free | public | Destroys an object and frees its associated memory, if necessary. |
FreeHandle | public | Releases the handle to a device context (HDC) used by the control canvas object. |
FreeInstance | public | Deallocates memory allocated by a previous call to the NewInstance method. |
GetCanvasOrientation | protected | Represents the getter method for the CanvasOrientation property. |
GetClipRect | protected | Represents the getter method for the ClipRect property. |
GetDisposed | protected | Getter for the Disposed property. |
GetHandle | protected | Represents the getter method for the Handle property. |
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. |
GetNamePath | public | Returns the name of the object as it appears in the Object Inspector. |
GetOwner | protected | Returns the owner of an object. |
GetPenPos | protected | Represents the getter method for the PenPos property. |
GetPixel | protected | Represents the getter method for the Pixels property. |
HandleAllocated | public | Indicates whether the TCanvas object has acquired a handle to a device context. |
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. |
InstanceSize | public | Returns the size in bytes of each instance of the object type. |
LineTo | public | Draws a line on the canvas from PenPos to the point specified by X and Y, and sets the pen position to (X, Y). |
Lock | public | Prevents other threads from drawing on the canvas. |
MethodAddress | public | Returns the address of a class method by name. |
MethodName | public | Returns the name of a class method by address. |
MoveTo | public | Changes the current drawing position to the point (X,Y). |
NewInstance | public | Allocates memory for an instance of an object type and returns a pointer to that new instance. |
Pie | public | Draws a pie-shaped section of the ellipse bounded by the rectangle (X1, Y1) and (X2, Y2) on the canvas. |
PolyBezier | public | Draws a set of Bezier curves. |
PolyBezierTo | public | Draws a set of Bezier curves and updates the value of PenPos. |
Polygon | public | Draws a series of lines on the canvas connecting the points passed in and closing the shape by drawing a line from the last point to the first point. |
Polyline | public | Draws a series of lines on the canvas with the current pen, connecting each of the points passed to it in Points. |
QualifiedClassName | public | Returns the qualified name of the class. |
Rectangle | public | Draws a rectangle on the canvas. |
Refresh | public | Deselects the Pen, Brush, and Font from the device context. |
RequiredState | protected | Changes the current state of the canvas to meet the given requirements. |
RoundRect | public | Draws a rectangle with rounded corners on the canvas. |
SafeCallException | public | Handles exceptions in methods declared using the safecall calling convention. |
SetBrush | protected | Represents the setter method for the Brush property. |
SetFont | protected | Represents the setter method for the Font property. |
SetHandle | protected | Represents the setter method for the Handle property. |
SetPen | protected | Represents the setter method for the Pen property. |
SetPenPos | protected | Represents the setter method for the PenPos property. |
SetPixel | protected | Represents the setter method for the Pixels property. |
StretchDraw | public | Draws the graphic specified by the Graphic parameter in the rectangle specified by the Rect parameter. |
TextExtent | public | Returns the width and height, in pixels, of a string rendered in the current font. |
TextHeight | public | Returns the height, in pixels, of a string rendered in the current font. |
TextOut | public | Writes a string on the canvas, starting at the point (X,Y), and then updates the PenPos to the end of the string. |
TextRect | public | Writes a string inside a clipping rectangle. |
TextWidth | public | Returns the width, in pixels, of a string rendered in the current font. |
ToString | public | Returns a string containing the class name. |
TryLock | public | Locks the canvas if it is currently unlocked. |
UnitName | public | Returns the name of the unit where the class is defined. |
UnitScope | public | Returns the class's unit scope. |
Unlock | public | Decreases the LockCount property, allowing other threads to execute when LockCount reaches 0. |
UpdateTextFlags | public | Updates the TextFlags property according to the Windows locale. |