问题描述
我在这里问如何使用自定义颜色对话框中的属性网格彩色结构:
I asked here how to use custom color dialog in property grid for Color struct:
的
从该链接就可以看到代码如果需要的话MyColorEditor类。
现在我可以使用自定义颜色对话框,但只有当我用我自己的结构是RGBA在这个例子。
From that link you can see code of MyColorEditor class if needed.Now i can use custom color dialog but only if i use my own struct which is RGBA in that example.
如果我用彩色此自定义类型编辑器结构它看起来像这样的属性网格:
If i use this custom type editor on color struct it looks like this in property grid:
但是,如果我用我创建RGBA结构,它看起来正确的:
But if i use RGBA struct which i created, it looks properly:
问题发生,因为UITypeEditorEditStyle.Modal不GetEditStyle()我想申请。
Problem happens because UITypeEditorEditStyle.Modal not applying with GetEditStyle() i think.
使用颜色结构可以比使用我的自定义颜色结构对我来说更好,因为那时我可以为颜色属性设置默认值,而不需要写我自己的类型转换器。
Using Color struct can be better than using my custom color struct for me because then i can set DefaultValue for Color property without requiring to write my own type converter.
所以我的问题是如何使用的颜色结构定义编辑器。
So my question is how to use custom editor on Color struct.
推荐答案
终于想通了如何做到这一点,ColorConverter是造成这个问题,所以需要用我自己的ColorConverter是这样的:
Finally figured out how to do it, ColorConverter was causing this problem so need to use my own ColorConverter like this:
public class MyColorConverter : ColorConverter
{
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return false;
}
}
编辑代码:
Editor codes:
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
namespace HelpersLib
{
public class MyColorEditor : UITypeEditor
{
public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.Modal;
}
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (value.GetType() != typeof(Color))
{
return value;
}
IWindowsFormsEditorService svc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (svc != null)
{
Color color = (Color)value;
using (DialogColor form = new DialogColor(color))
{
if (svc.ShowDialog(form) == DialogResult.OK)
{
return (Color)form.NewColor;
}
}
}
return value;
}
public override bool GetPaintValueSupported(ITypeDescriptorContext context)
{
return true;
}
public override void PaintValue(PaintValueEventArgs e)
{
Graphics g = e.Graphics;
Color color = (Color)e.Value;
if (color.A < 255)
{
using (Image checker = ImageHelpers.CreateCheckers(e.Bounds.Width / 2, e.Bounds.Height / 2, Color.LightGray, Color.White))
{
g.DrawImage(checker, e.Bounds);
}
}
using (SolidBrush brush = new SolidBrush(color))
{
e.Graphics.FillRectangle(brush, e.Bounds);
}
e.Graphics.DrawRectangleProper(Pens.Black, e.Bounds);
}
}
}
和用法示例:
[DefaultValue(typeof(Color), "Black"),
Editor(typeof(MyColorEditor), typeof(UITypeEditor)),
TypeConverter(typeof(MyColorConverter))]
public Color Color { get; set; }
截图:
Screenshot:
这篇关于自定义ColorEditor不会对色彩结构正常工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!