# drawing_canvas.h


## Overview

Declares functions related to the **canvas** object in the drawing module.

**Since:**
8

**Related Modules:**

[Drawing](_drawing.md)


## Summary


### Functions

| Name | Description | 
| -------- | -------- |
| [OH_Drawing_CanvasCreate](_drawing.md#oh_drawing_canvascreate) (void) | Creates an **OH_Drawing_Canvas** object.  | 
| [OH_Drawing_CanvasDestroy](_drawing.md#oh_drawing_canvasdestroy) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*) | Destroys an **OH_Drawing_Canvas** object and reclaims the memory occupied by the object.  | 
| [OH_Drawing_CanvasBind](_drawing.md#oh_drawing_canvasbind) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*, [OH_Drawing_Bitmap](_drawing.md#oh_drawing_bitmap) \*) | Binds a bitmap to a canvas so that the content drawn on the canvas is output to the bitmap (this process is called CPU rendering).  | 
| [OH_Drawing_CanvasAttachPen](_drawing.md#oh_drawing_canvasattachpen) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*, const [OH_Drawing_Pen](_drawing.md#oh_drawing_pen) \*) | Attaches a pen to a canvas so that the canvas will use the style and color of the pen to outline a shape.  | 
| [OH_Drawing_CanvasDetachPen](_drawing.md#oh_drawing_canvasdetachpen) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*) | Detaches the pen from a canvas so that the canvas will not use the style and color of the pen to outline a shape.  | 
| [OH_Drawing_CanvasAttachBrush](_drawing.md#oh_drawing_canvasattachbrush) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*, const [OH_Drawing_Brush](_drawing.md#oh_drawing_brush) \*) | Attaches a brush to a canvas so that the canvas will use the style and color of the brush to fill in a shape.  | 
| [OH_Drawing_CanvasDetachBrush](_drawing.md#oh_drawing_canvasdetachbrush) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*) | Detaches the brush from a canvas so that the canvas will not use the style and color of the brush to fill in a shape.  | 
| [OH_Drawing_CanvasSave](_drawing.md#oh_drawing_canvassave) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*) | Saves the current canvas status (canvas matrix) to the top of the stack.  | 
| [OH_Drawing_CanvasRestore](_drawing.md#oh_drawing_canvasrestore) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*) | Restores the canvas status (canvas matrix) saved on the top of the stack.  | 
| [OH_Drawing_CanvasDrawLine](_drawing.md#oh_drawing_canvasdrawline) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*, float x1, float y1, float x2, float y2) | Draws a line segment.  | 
| [OH_Drawing_CanvasDrawPath](_drawing.md#oh_drawing_canvasdrawpath) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*, const [OH_Drawing_Path](_drawing.md#oh_drawing_path) \*) | Draws a path.  | 
| [OH_Drawing_CanvasClear](_drawing.md#oh_drawing_canvasclear) ([OH_Drawing_Canvas](_drawing.md#oh_drawing_canvas) \*, uint32_t color) | Clears a canvas by using a specified color.  |