重绘DevExpress的XtraMessageBox消息提示框控件
先来看提示框，可以看到框其实是一个去掉最大化、最小化按钮后的窗体，窗体的内容就是我们想要提示的内容，重绘提示框其实就是重绘窗体以及中间部分的内容。
首先重绘窗体，消息提示框的窗体不是XtraForm而是XtraMessageBoxForm,重写CreateFormBorderPainter()方法。
internal class MessageBoxForm : XtraMessageBoxForm
{
protected override FormPainter CreateFormBorderPainter()
{
return new MessageBoxFormPainter(this, LookAndFeel);
}
}
MessageBoxFormPainter继承于FormPainter，窗体样式由此类绘制。窗体可重绘的部分包括窗体边框，border（边框）、caption（标题栏）、Frame（提示框中间部分和提示框左下右边之间部分）但不包括中间内容部分。重绘需要用GraphicsCache对选定区域进行重绘（Rectangle），如标题文字框（TextBounds）、标题栏框（CaptionBounds）等等。详细见下：
internal class MessageBoxFormPainter : FormPainter
{
internal MessageBoxFormPainter(Control owner, ISkinProvider provider) : base(owner, provider) { }
///
///
protected override void DrawText(GraphicsCache cache)
{
string text = Text;
if (text == null || text.Length == 0 || TextBounds.IsEmpty)
return;
AppearanceObject appearance = new AppearanceObject(GetDefaultAppearance());
appearance.Font = Owner.Font;
appearance.TextOptions.Trimming = Trimming.EllipsisCharacter;
Rectangle r = RectangleHelper.GetCenterBounds(TextBounds, new Size(TextBounds.Width, appearance.CalcDefaultTextSize(cache.Graphics).Height));
DrawTextShadow(cache, appearance, r);
//cache.DrawString(text, appearance.Font, appearance.GetForeBrush(cache),r, appearance.GetStringFormat());
cache.DrawString(text, appearance.Font, Color.Blue, r, appearance.GetStringFormat()); // 字体颜色、样式
}
///
///
///
///
protected override void DrawTextShadow(GraphicsCache cache, AppearanceObject appearance, Rectangle bounds)
{
base.DrawTextShadow(cache, appearance, bounds);
}
///
///
///
///
protected override int CalcTextHeight(GraphicsCache cache, AppearanceObject appearance)
{
return (int)(cache.Graphics.MeasureString(Text, Owner.Font).Height);
}
///
///
protected override int GetCaptionHeight()
{
return 30;
}
///
///
///
protected override void DrawCaption(GraphicsCache cache, bool doubleBuffer)
{
base.DrawCaption(cache, doubleBuffer);
}
///
///
protected override void DrawBackground(GraphicsCache cache)
{
base.DrawBackground(cache);
Rectangle r = RectangleHelper.GetCenterBounds(this.CaptionBounds, new Size(CaptionBounds.Width, CaptionBounds.Height));
Brush linGrBrush = new LinearGradientBrush(r,
Color.FromArgb(255, 255, 0, 0),
Color.FromArgb(255, 0, 0, 255), 45);
cache.FillRectangle(linGrBrush, r);
}
///
///
///
protected override void DrawBorders(GraphicsCache cache, bool doubleBuffer)
{
base.DrawBorders(cache, doubleBuffer);
//Rectangle r = RectangleHelper.GetCenterBounds(this.CaptionBounds, new Size(CaptionBounds.Width, CaptionBounds.Height));
//Pen myPen = new Pen(Color.Black, 1);
//cache.DrawRectangle(myPen, r);
}
///
///
///
/// 表示周边为左、右、下的哪一个
protected override void DrawFrameCore(GraphicsCache cache, SkinElementInfo info, FrameKind kind)
{
base.DrawFrameCore(cache, info, kind);
Brush linGrBrush = new LinearGradientBrush(info.Bounds,
Color.FromArgb(255, 255, 0, 0),
Color.FromArgb(255, 0, 0, 255), 45);
//Color.FromArgb(255, 119, 144, 237),
//Color.FromArgb(255, 180, 154, 202), 45);
cache.FillRectangle(linGrBrush, info.Bounds);
}
///
///
public override void DrawIcon(GraphicsCache cache)
{
base.DrawIcon(cache);
//cache.DrawIcon(SystemIcons.Warning,IconBounds);
}
///
///
///
public override void DrawButtons(GraphicsCache cache, bool useClip)
{
//base.DrawButtons(cache, useClip);
this.Buttons.Clear();
}
}
最后新建一个类NewXtraMessageBox，写一个用于弹出窗体的方法，返回值为DialogResult。
private static DialogResult ShowInternal(Control owner, string message, string caption, Icon messageIcon, params DialogResult[] dialogResults)
{
MessageBoxForm form = new MessageBoxForm();
XtraMessageBoxArgs args = new XtraMessageBoxArgs(owner, message, caption, dialogResults, messageIcon, 0);
args.Showing += Args_Showing;
return form.ShowMessageBoxDialog(args);
}
XtraMessageBoxArgs便是提示框展示的内容部分，注册Args_Showing事件，在事件重绘窗体。这里也能重绘窗体，但能重绘的部分只包括在正常设计窗体时的属性部分（字体大小、边框样式、透明度等），提示框中间部分样式只能在此处修改。
///
///
///
private static void Args_Showing(object sender, XtraMessageShowingArgs e)
{
//改变form相关样式
e.Form.Font = new Font("Arial", 14F);
e.Form.LookAndFeel.UseDefaultLookAndFeel = false;
e.Form.LookAndFeel.Style = DevExpress.LookAndFeel.LookAndFeelStyle.Skin;
//e.Form.FormBorderStyle = FormBorderStyle.None;
MessageButtonCollection buttons = e.Buttons;
SimpleButton btn = null;
foreach (var dialog in (DialogResult[])Enum.GetValues(typeof(DialogResult)))
{
btn = buttons[dialog];
if (btn != null)
{
btn.Size = new Size(Convert.ToInt32(btn.Width * 1.2), Convert.ToInt32(btn.Height * 1.2)); //按钮大小
btn.Font = e.Form.Font; //按钮字体
btn.ShowFocusRectangle = DefaultBoolean.False;
}
if (dialog == DialogResult.OK) //通过DialogResult确定按钮并改变具体按钮样式
{
btn.Text = "‘是’按钮";
}
}
}
}
最后在此类中写Show方法，输入标题、内容、按钮类型、图标等信息调用ShowInternal方法，可自定义图标。
public static void Show(string message)
{
ShowMessageBox(message, null, MessageBoxButtons.OK, null);
}
public static void Show(Control owner, string message)
{
ShowInternal(owner, message, null, null, DialogResult.OK);
}
public static void Show(string message, string caption)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, null);
}
public static void Show(string message, string caption, MessageBoxButtons messageBox)
{
ShowMessageBox(message, caption, messageBox, null);
}
public static void Show(string message, string caption, MessageBoxIcon messageBoxIcon)
{
if (messageBoxIcon == MessageBoxIcon.Warning)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Warning);
}
else if (messageBoxIcon == MessageBoxIcon.Question)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Question);
}
else if (messageBoxIcon == MessageBoxIcon.Error)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Error);
}
else if (messageBoxIcon == MessageBoxIcon.Information)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Information);
}
else if (messageBoxIcon == MessageBoxIcon.Asterisk)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Asterisk);
}
else if (messageBoxIcon == MessageBoxIcon.Exclamation)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Exclamation);
}
else if (messageBoxIcon == MessageBoxIcon.Hand)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Hand);
}
else
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, null);
}
}
public static void Show(string message, string caption, Icon icon)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, icon);
}
public static void Show(string message, string caption, MessageBoxButtons messageBox, MessageBoxIcon messageBoxIcon)
{
if (messageBoxIcon == MessageBoxIcon.Warning)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Warning);
}
else if (messageBoxIcon == MessageBoxIcon.Question)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Question);
}
else if (messageBoxIcon == MessageBoxIcon.Error)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Error);
}
else if (messageBoxIcon == MessageBoxIcon.Information)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Information);
}
else if (messageBoxIcon == MessageBoxIcon.Asterisk)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Asterisk);
}
else if (messageBoxIcon == MessageBoxIcon.Exclamation)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Exclamation);
}
else if (messageBoxIcon == MessageBoxIcon.Hand)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Hand);
}
else
{
ShowMessageBox(message, caption, messageBox, null);
}
}
public static void Show(string message, string caption, MessageBoxButtons messageBox, Icon icon)
{
ShowMessageBox(message, caption, messageBox, icon);
}
private static void ShowMessageBox(string message, string caption, MessageBoxButtons messageBox, Icon icon)
{
if (messageBox == MessageBoxButtons.OK)
{
ShowInternal(null, message, caption, icon, DialogResult.OK);
}
else if (messageBox == MessageBoxButtons.OKCancel)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.OK, DialogResult.Cancel });
}
else if (messageBox == MessageBoxButtons.YesNo)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Yes, DialogResult.No });
}
else if (messageBox == MessageBoxButtons.YesNoCancel)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Yes, DialogResult.No, DialogResult.Cancel });
}
else if (messageBox == MessageBoxButtons.RetryCancel)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Retry, DialogResult.Cancel });
}
else if (messageBox == MessageBoxButtons.AbortRetryIgnore)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Abort, DialogResult.Retry, DialogResult.Ignore });
}
}
效果如下：
通过重绘可以还可将背景改为图片、改变按钮位置等等、可进一步拓展。
完整项目可以从我的csdn下载：https://download.csdn.net/download/weixin_52748738/18149812
附完整代码：
using DevExpress.Skins;
using DevExpress.Skins.XtraForm;
using DevExpress.Utils;
using DevExpress.Utils.Drawing;
using DevExpress.XtraEditors;
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
namespace TestMessageBox
{
public static class NewMessageBox
{
#region show部分
public static void Show(string message)
{
ShowMessageBox(message, null, MessageBoxButtons.OK, null);
}
public static void Show(Control owner, string message)
{
ShowInternal(owner, message, null, null, DialogResult.OK);
}
public static void Show(string message, string caption)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, null);
}
public static void Show(string message, string caption, MessageBoxButtons messageBox)
{
ShowMessageBox(message, caption, messageBox, null);
}
public static void Show(string message, string caption, MessageBoxIcon messageBoxIcon)
{
if (messageBoxIcon == MessageBoxIcon.Warning)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Warning);
}
else if (messageBoxIcon == MessageBoxIcon.Question)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Question);
}
else if (messageBoxIcon == MessageBoxIcon.Error)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Error);
}
else if (messageBoxIcon == MessageBoxIcon.Information)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Information);
}
else if (messageBoxIcon == MessageBoxIcon.Asterisk)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Asterisk);
}
else if (messageBoxIcon == MessageBoxIcon.Exclamation)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Exclamation);
}
else if (messageBoxIcon == MessageBoxIcon.Hand)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, SystemIcons.Hand);
}
else
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, null);
}
}
public static void Show(string message, string caption, Icon icon)
{
ShowMessageBox(message, caption, MessageBoxButtons.OK, icon);
}
public static void Show(string message, string caption, MessageBoxButtons messageBox, MessageBoxIcon messageBoxIcon)
{
if (messageBoxIcon == MessageBoxIcon.Warning)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Warning);
}
else if (messageBoxIcon == MessageBoxIcon.Question)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Question);
}
else if (messageBoxIcon == MessageBoxIcon.Error)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Error);
}
else if (messageBoxIcon == MessageBoxIcon.Information)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Information);
}
else if (messageBoxIcon == MessageBoxIcon.Asterisk)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Asterisk);
}
else if (messageBoxIcon == MessageBoxIcon.Exclamation)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Exclamation);
}
else if (messageBoxIcon == MessageBoxIcon.Hand)
{
ShowMessageBox(message, caption, messageBox, SystemIcons.Hand);
}
else
{
ShowMessageBox(message, caption, messageBox, null);
}
}
public static void Show(string message, string caption, MessageBoxButtons messageBox, Icon icon)
{
ShowMessageBox(message, caption, messageBox, icon);
}
private static void ShowMessageBox(string message, string caption, MessageBoxButtons messageBox, Icon icon)
{
if (messageBox == MessageBoxButtons.OK)
{
ShowInternal(null, message, caption, icon, DialogResult.OK);
}
else if (messageBox == MessageBoxButtons.OKCancel)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.OK, DialogResult.Cancel });
}
else if (messageBox == MessageBoxButtons.YesNo)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Yes, DialogResult.No });
}
else if (messageBox == MessageBoxButtons.YesNoCancel)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Yes, DialogResult.No, DialogResult.Cancel });
}
else if (messageBox == MessageBoxButtons.RetryCancel)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Retry, DialogResult.Cancel });
}
else if (messageBox == MessageBoxButtons.AbortRetryIgnore)
{
ShowInternal(null, message, caption, icon, new DialogResult[] { DialogResult.Abort, DialogResult.Retry, DialogResult.Ignore });
}
}
#endregion
private static DialogResult ShowInternal(Control owner, string message, string caption, Icon messageIcon, params DialogResult[] dialogResults)
{
MessageBoxForm form = new MessageBoxForm();
XtraMessageBoxArgs args = new XtraMessageBoxArgs(owner, message, caption, dialogResults, messageIcon, 0);
args.Showing += Args_Showing;
return form.ShowMessageBoxDialog(args);
}
///
///
///
private static void Args_Showing(object sender, XtraMessageShowingArgs e)
{
e.Form.Font = new Font("Arial", 14F);
e.Form.LookAndFeel.UseDefaultLookAndFeel = false;
e.Form.LookAndFeel.Style = DevExpress.LookAndFeel.LookAndFeelStyle.Skin;
//e.Form.FormBorderStyle = FormBorderStyle.None;
MessageButtonCollection buttons = e.Buttons;
SimpleButton btn = null;
foreach (var dialog in (DialogResult[])Enum.GetValues(typeof(DialogResult)))
{
btn = buttons[dialog];
if (btn != null)
{
btn.Size = new Size(Convert.ToInt32(btn.Width * 1.2), Convert.ToInt32(btn.Height * 1.2)); //按钮大小
btn.Font = e.Form.Font; //按钮字体
btn.ShowFocusRectangle = DefaultBoolean.False;
}
if (dialog == DialogResult.OK)
{
btn.Text = "‘是’按钮";
}
}
}
}
internal class MessageBoxForm : XtraMessageBoxForm
{
protected override FormPainter CreateFormBorderPainter()
{
return new MessageBoxFormPainter(this, LookAndFeel);
}
}
internal class MessageBoxFormPainter : FormPainter
{
internal MessageBoxFormPainter(Control owner, ISkinProvider provider) : base(owner, provider) { }
///
///
protected override void DrawText(GraphicsCache cache)
{
string text = Text;
if (text == null || text.Length == 0 || TextBounds.IsEmpty)
return;
AppearanceObject appearance = new AppearanceObject(GetDefaultAppearance());
appearance.Font = Owner.Font;
appearance.TextOptions.Trimming = Trimming.EllipsisCharacter;
Rectangle r = RectangleHelper.GetCenterBounds(TextBounds, new Size(TextBounds.Width, appearance.CalcDefaultTextSize(cache.Graphics).Height));
DrawTextShadow(cache, appearance, r);
//cache.DrawString(text, appearance.Font, appearance.GetForeBrush(cache),r, appearance.GetStringFormat());
cache.DrawString(text, appearance.Font, Color.Blue, r, appearance.GetStringFormat()); // 字体颜色、样式
}
///
///
///
///
protected override void DrawTextShadow(GraphicsCache cache, AppearanceObject appearance, Rectangle bounds)
{
base.DrawTextShadow(cache, appearance, bounds);
}
///
///
///
///
protected override int CalcTextHeight(GraphicsCache cache, AppearanceObject appearance)
{
return (int)(cache.Graphics.MeasureString(Text, Owner.Font).Height);
}
///
///
protected override int GetCaptionHeight()
{
return 30;
}
///
///
///
protected override void DrawCaption(GraphicsCache cache, bool doubleBuffer)
{
base.DrawCaption(cache, doubleBuffer);
}
///
///
protected override void DrawBackground(GraphicsCache cache)
{
base.DrawBackground(cache);
Rectangle r = RectangleHelper.GetCenterBounds(this.CaptionBounds, new Size(CaptionBounds.Width, CaptionBounds.Height));
Brush linGrBrush = new LinearGradientBrush(r,
Color.FromArgb(255, 255, 0, 0),
Color.FromArgb(255, 0, 0, 255), 45);
cache.FillRectangle(linGrBrush, r);
}
///
///
///
protected override void DrawBorders(GraphicsCache cache, bool doubleBuffer)
{
base.DrawBorders(cache, doubleBuffer);
//Rectangle r = RectangleHelper.GetCenterBounds(this.CaptionBounds, new Size(CaptionBounds.Width, CaptionBounds.Height));
//Pen myPen = new Pen(Color.Black, 1);
//cache.DrawRectangle(myPen, r);
}
///
///
///
/// 表示周边为左、右、下的哪一个
protected override void DrawFrameCore(GraphicsCache cache, SkinElementInfo info, FrameKind kind)
{
base.DrawFrameCore(cache, info, kind);
Brush linGrBrush = new LinearGradientBrush(info.Bounds,
Color.FromArgb(255, 255, 0, 0),
Color.FromArgb(255, 0, 0, 255), 45);
//Color.FromArgb(255, 119, 144, 237),
//Color.FromArgb(255, 180, 154, 202), 45);
cache.FillRectangle(linGrBrush, info.Bounds);
}
///
///
public override void DrawIcon(GraphicsCache cache)
{
base.DrawIcon(cache);
//cache.DrawIcon(SystemIcons.Warning,IconBounds);
}
///
///
///
public override void DrawButtons(GraphicsCache cache, bool useClip)
{
//base.DrawButtons(cache, useClip);
this.Buttons.Clear();
}
}
}
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