我拍摄的消息框出现在窗口的中央，但有没有办法让它们出现在窗体的中心。
答案 0 :(得分：0)
如果您正在谈论标准MessageBox，并且希望它显示在调用它的Form的中心，请尝试This Solution。请注意，您要查看来自＆＃34; Joe＆＃34;的答案。而不是标记作为答案。
我已经使用了它，它对我很有用。
答案 1 :(得分：0)
这是我自己的消息框用C#winform，除了中心父窗体的实现，还可以自定义按钮文字和图标。
using System;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
namespace BluePointLilac.Methods
{
/// <summary>在窗体居中显示的MessageBox</summary>
public class MessageBoxEx
{
public static DialogResult Show(string text, string caption = null,
MessageBoxButtons buttons = MessageBoxButtons.OK,
MessageBoxIcon boxIcon = MessageBoxIcon.None)
{
using(MessageBoxForm frm = new MessageBoxForm(text, caption, buttons, boxIcon))
{
return frm.ShowDialog();
}
}
public static string Show(string text, string caption,
string[] buttonTexts, Image boxImaage, bool cancelBox = false)
{
using(MessageBoxForm frm = new MessageBoxForm(text, caption, buttonTexts, boxImaage, cancelBox))
{
frm.ShowDialog();
return frm.Tag?.ToString();
}
}
sealed class MessageBoxForm : Form
{
private MessageBoxForm(string text, string caption)
{
lblText.Text = text;
this.Text = caption;
this.Font = SystemFonts.MessageBoxFont;
this.ShowIcon = this.ShowInTaskbar = false;
this.MaximizeBox = this.MinimizeBox = false;
this.FormBorderStyle = FormBorderStyle.FixedSingle;
this.StartPosition = FormStartPosition.CenterParent;
}
public MessageBoxForm(string text, string caption,
string[] buttonTexts, Image boxImage, bool cancelBox) : this(text, caption)
{
this.CancelBox = cancelBox;
this.InitializeComponents(buttonTexts, boxImage);
foreach(Button button in flpButtons.Controls)
{
button.Click += (sender, e) =>
{
this.Tag = button.Text;
this.Close();
};
}
}
public MessageBoxForm(string text, string caption,
MessageBoxButtons buttons, MessageBoxIcon boxIcon) : this(text, caption)
{
string[] buttonTexts = null;
Image boxImage = null;
switch(buttons)
{
case MessageBoxButtons.OK:
buttonTexts = new[] { "OK" }; break;
case MessageBoxButtons.OKCancel:
buttonTexts = new[] { "Cancel", "OK" }; break;
case MessageBoxButtons.AbortRetryIgnore:
buttonTexts = new[] { "&Ignore", "&Retry", "&Abort" }; break;
case MessageBoxButtons.YesNoCancel:
buttonTexts = new[] { "Cancel", "&No", "&Yes" }; break;
case MessageBoxButtons.YesNo:
buttonTexts = new[] { "&No", "&Yes" }; break;
case MessageBoxButtons.RetryCancel:
buttonTexts = new[] { "Cancel", "&Retry" }; break;
}
switch(boxIcon)
{
case MessageBoxIcon.Question:
boxImage = SystemIcons.Question.ToBitmap(); break;
case MessageBoxIcon.Error:
boxImage = SystemIcons.Error.ToBitmap(); break;
case MessageBoxIcon.Warning:
boxImage = SystemIcons.Warning.ToBitmap(); break;
case MessageBoxIcon.Information:
boxImage = SystemIcons.Information.ToBitmap(); break;
}
this.CancelBox = !buttonTexts.Contains("Cancel");
this.InitializeComponents(buttonTexts, boxImage);
foreach(Button button in flpButtons.Controls)
{
button.Click += (sender, e) =>
{
switch(button.Text)
{
case "OK":
this.DialogResult = DialogResult.OK; break;
case "Cancel":
this.DialogResult = DialogResult.Cancel; break;
case "&Yes":
this.DialogResult = DialogResult.Yes; break;
case "&No":
this.DialogResult = DialogResult.No; break;
case "&Abort":
this.DialogResult = DialogResult.Abort; break;
case "&Retry":
this.DialogResult = DialogResult.Retry; break;
case "&Ignore":
this.DialogResult = DialogResult.Ignore; break;
}
};
}
}
private void InitializeComponents(string[] buttonTexts, Image boxImage)
{
int w1 = 0;
Size buttonSize = new Size(75, 27);
for(int i = 0; i < buttonTexts.Length; i++)
{
Button button = new Button
{
Margin = new Padding(0, 12, 12, 12),
Parent = flpButtons,
AutoSize = true,
Text = buttonTexts[i],
};
button.Width = Math.Max(buttonSize.Width, button.Width);
button.Height = Math.Max(buttonSize.Height, button.Height);
buttonSize = button.Size;
w1 += button.Width + button.Margin.Horizontal;
}
picIcon.Image = boxImage;
if(boxImage == null)
{
picIcon.Visible = false;
lblText.Left = 35;
}
pnlInfo.Controls.AddRange(new Control[] { picIcon, lblText });
this.Controls.AddRange(new Control[] { pnlInfo, flpButtons });
pnlInfo.Height = lblText.Height + lblText.Top * 2;
int w2 = lblText.Right + picIcon.Left;
int w = Math.Max(w1, w2);
int h = pnlInfo.Height + flpButtons.Height;
this.ClientSize = new Size(w, h);
}
readonly FlowLayoutPanel flpButtons = new FlowLayoutPanel
{
Padding = new Padding(0, 0, 12, 0),
FlowDirection = FlowDirection.RightToLeft,
BackColor = default,
Dock = DockStyle.Bottom,
Height = 50
};
readonly Panel pnlInfo = new Panel
{
BackColor = Color.White,
Dock = DockStyle.Top,
};
readonly PictureBox picIcon = new PictureBox
{
SizeMode = PictureBoxSizeMode.AutoSize,
Location = new Point(30, 30)
};
readonly Label lblText = new Label
{
Location = new Point(67, 32),
AutoSize = true,
};
readonly bool CancelBox = false;
protected override CreateParams CreateParams
{
get
{
const int CP_NOCLOSE_BUTTON = 0x200;
CreateParams cp = base.CreateParams;
if(CancelBox) cp.ClassStyle |= CP_NOCLOSE_BUTTON; //禁用关闭按钮
return cp;
}
}
protected override bool ProcessDialogKey(Keys keyData)
{
if(ModifierKeys == Keys.None)
{
if(!CancelBox && keyData == Keys.Escape)
{
this.DialogResult = DialogResult.Cancel; //ESC键关闭窗体并返回“取消”
return true;
}
}
return base.ProcessDialogKey(keyData);
}
protected override void OnLoad(EventArgs e)
{
this.Owner = Form.ActiveForm;
if(this.Owner == null) this.StartPosition = FormStartPosition.CenterScreen;
base.OnLoad(e);
}
}
}
}