wpf 3

Today, I continue do some search for Wpf, I found something misunderstand before.

For example, MouseEventArgs.GetPostion(), at last article, I pass in (IInputElement)this, but it's wrong, it should pass

(UIElement)sender.

 

Also, I found new differnces:

 

1, MouseDown and MouseUp use MouseButtonEventArgs instead of MouseEventArgs, it different from MouseMove.

    And e.Button == MouseButtons.Left should change to e.ChangeButton == MouseButton.Left

 

namespace System.Windows.Input

{

// Summary:

// Defines values that specify the buttons on a mouse device.

public enum MouseButton

{

// Summary:

// The left mouse button.

Left = 0,

//

// Summary:

// The middle mouse button.

Middle = 1,

//

// Summary:

// The right mouse button.

Right = 2,

//

// Summary:

// The first extended mouse button.

XButton1 = 3,

//

// Summary:

// The second extended mouse button.

XButton2 = 4,

}

}

 

But original one is lile:

using System;

using System.Runtime.InteropServices;

namespace System.Windows.Forms

{

// Summary:

// Specifies constants that define which mouse button was pressed.

[Flags]

[ComVisible(true)]

public enum MouseButtons

{

// Summary:

// No mouse button was pressed.

None = 0,

//

// Summary:

// The left mouse button was pressed.

Left = 1048576,

//

// Summary:

// The right mouse button was pressed.

Right = 2097152,

//

// Summary:

// The middle mouse button was pressed.

Middle = 4194304,

//

// Summary:

// The first XButton was pressed.

XButton1 = 8388608,

//

// Summary:

// The second XButton was pressed.

XButton2 = 16777216,

}

}

 

2, Point changes a lot, I will write detail thing for it later. Also contains Size, Vector..

 

3, use DrawingContext replace Graphics, 

    use OnRender(DrawingContext) replace OnPaint(PaintEventArgs)

    I will write detail thing later.

 

4, ColorPickerCustomControl

This sample shows how to create a custom control and display it in a dialog window. This sample defines a custom color picker control that enables users to browse colors by their hue, saturation, and brightness. The control also enables the user to enter RGB, scRGB, and hexadecimal values directly.