计算显示文本的 Windows 窗体宽度
我需要计算显示文本的 Windows 窗体宽度。 表单宽度显然以像素为单位,因此您只想获取以像素为单位的文本宽度,但这不起作用:
animationForm.Width = TextRenderer.MeasureText(_caption, animationForm.Font).Width;
计算出的表单宽度太小(截断文本) - 这是怎么回事? MeasureText 使用像素,表单宽度以像素为单位。
这效果更好,但我认为不对:
animationForm.Width = (int)(_caption.Length * animationForm.Font.Size);
将不胜感激。
动画图片 - PictureBox, 标签图像上设置
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Threading;
using System.Windows.Forms;
namespace PrlSystems.MaimInvoicing.Forms
{
public partial class ProgressIndicatorForm : Form
{
private volatile bool _animating = false;
private Form _parent;
private string _caption = "";
private object _mutex = new object();
public ProgressIndicatorForm(Form parent)
{
InitializeComponent();
_parent = parent;
}
public string Caption
{
set { _caption = value; }
get { return _caption; }
}
public void StartAnimation()
{
lock (_mutex)
{
if (!_animating)
{
if (_parent != null)
{
_parent.Cursor = Cursors.WaitCursor;
_parent.Enabled = false;
}
_animating = true;
_SpawnAnimationThread();
}
}
}
public void StopAnimation()
{
lock (_mutex)
{
if (_animating)
{
_animating = false; // stop animation thread
if (_parent != null)
{
// restore parent form UI
_parent.Cursor = Cursors.Default;
_parent.Enabled = true;
_parent.Activate();
}
}
}
}
private void _SpawnAnimationThread()
{
Thread animationThread = new Thread(new ThreadStart(_Animate));
animationThread.Priority = ThreadPriority.Normal;
animationThread.IsBackground = true; // should terminate when application ends
animationThread.Start();
}
private void _Animate()
{
ProgressIndicatorForm animationForm = new ProgressIndicatorForm(_parent);
animationForm.CaptionLabel.Text = _caption;
animationForm.StartPosition = FormStartPosition.CenterScreen;
animationForm.TopMost = true;
animationForm.Width = _CalculateFormWidth(animationForm);
animationForm.Show();
while (_animating)
{
animationForm.CaptionLabel.Text = _caption;
animationForm.Width = _CalculateFormWidth(animationForm);
animationForm.BringToFront();
animationForm.Refresh();
}
animationForm.Close();
animationForm.Dispose();
}
private int _CalculateFormWidth(ProgressIndicatorForm animationForm)
{
int width = AnimationPic.Location.X + AnimationPic.Width +
TextRenderer.MeasureText(_caption, animationForm.Font).Width;
return width;
}
}
}
标题在设计器中的
:
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评论(3)
您需要使用 < 而不是
Form.Width
强>Form.ClientSize.Width
。后者将返回表单客户区的实际宽度;即,你可以画东西的地方。来自文档的备注部分:
与
Form.Width
(或Form.Size.Width
)对比,后者返回屏幕上显示的表单的整个宽度,包括非客户区域中多余的东西,例如窗口边框。绝对不要浪费任何时间尝试手动计算和删除这些项目的尺寸;它已经为你完成了。使用以下代码:
我得到这个:
对我来说看起来不错......
Rather than
Form.Width
, you need to useForm.ClientSize.Width
.The latter will return the actual width of the form's client area; i.e., the place where you can draw stuff. From the Remarks section in the documentation:
Contrast that with
Form.Width
(orForm.Size.Width
), which returns the entire width of the form as it appears on the screen, including superfluous stuff in the non-client area, like window borders. Definitely don't waste any time trying to calculate and remove the dimensions for these items manually; it's already been done for you.Using the following code:
I get this:
Looks pretty good to me...
您还需要考虑额外的尺寸,例如表格的宽度。标签周围的空间(如果您使用标签?)
You also need to take account the extra sizes such as width of the form. Space around the label(if you are using label?)
您是否尝试过指定设备上下文?
尝试重载此方法
MeasureText(IDeviceContext, String, Font, Size)
。当您使用
Form.Width
时,宽度还包含窗口边框的宽度。试试这个:Have you tried specifying device context?
Try this method overload
MeasureText(IDeviceContext, String, Font, Size)
.When you use
Form.Width
, the width contains also width of the window border. Try this: