C# Class VietOCR.NET.Controls.CustomPaintTextBox

This is the class that handles painting the wavy red lines. It utilizes the NativeWindow to find out when it needs to draw

Inheritance: System.Windows.Forms.NativeWindow, IDisposable

Show file Open project: nguyenq/VietOCR3.NET

Public Methods

Method	Description
CustomPaintTextBox ( TextBoxBase clientTextBox, SpellCheckHelper speller ) : System
Dispose ( ) : void
ForcePaint ( ) : void	The textbox is not redrawn much, so this will force the textbox to call the custom paint function. Otherwise, text can be entered and no wavy red lines will appear

Protected Methods

Method	Description
Dispose ( bool disposing ) : void
WndProc ( System &m ) : void	This is called when the textbox is being redrawn. When it is, for the textbox to get refreshed, call its default paint method and then call our method

Private Methods

Method	Description
CustomPaint ( ) : void	Gets the ranges of chars that represent the spelling errors and then draw a wavy red line underneath them.
DrawWave ( Point start, Point end ) : void	Draws the wavy red line given a starting point and an ending point
GetOffsets ( TextBoxBase &curTextBox, int startingIndex, int endingIndex, System.Windows.Forms.RichTextBox tempRTB ) : Point	Determines the X and Y offsets to use based on font height last letter width
TextBoxBase_ClientSizeChanged ( object sender, System e ) : void	When the TextBoxBase is resized, this will reset the objects that are used to draw the wavy, red line. Without this, anything outside of the original bounds will not be drawn
TextBoxBase_HandleCreated ( object sender, System e ) : void	Reassign this classes handle and the graphics object anytime the textbox's handle is changed

Method Details

CustomPaintTextBox() public method

public CustomPaintTextBox ( TextBoxBase clientTextBox, SpellCheckHelper speller ) : System
clientTextBox	System.Windows.Forms.TextBoxBase
speller	SpellCheckHelper
return	System

Dispose() public method

public Dispose ( ) : void
return	void

Dispose() protected method

protected Dispose ( bool disposing ) : void
disposing	bool
return	void

ForcePaint() public method

The textbox is not redrawn much, so this will force the textbox to call the custom paint function. Otherwise, text can be entered and no wavy red lines will appear

public ForcePaint ( ) : void
return	void

WndProc() protected method

This is called when the textbox is being redrawn. When it is, for the textbox to get refreshed, call its default paint method and then call our method

protected WndProc ( System &m ) : void
m	System	The windows message
return	void