public static void SetTabWidth(TextBox textbox, int tabWidth)
{
System.Drawing.Graphics graphics = textbox.CreateGraphics();
var characterWidth = (int)graphics.MeasureString("M", textbox.Font).Width;
SendMessage(textbox.Handle, EM_SETTABSTOPS, 1,
new int[] { tabWidth * characterWidth });
}
/// <summary>
/// Automatically resize font in single line textbox based on
/// textbox size and length of sample string
/// </summary>
/// <remarks>
/// Based on https://stackoverflow.com/a/38932706 but fixed/simplified.
/// Must set AutoSize = false on textbox and anchor it to container
/// so it resizes. A bit of a hack, but it works.
/// </remarks>
/// <param name="tb">Textbox</param>
/// <param name="s">String to use as reference for width</param>
public static void FontAutoResize(this System.Windows.Forms.TextBox tb, string s)
{
if (s.Length > 0)
{
SizeF stringSize;
using (Graphics gfx = tb.CreateGraphics())
{
// Get the size given the string and the font
stringSize = gfx.MeasureString(s, tb.Font);
double areaAvailable = tb.Height * tb.Width;
double areaRequired = stringSize.Width * stringSize.Height * 1.1;
if (areaAvailable / areaRequired > 1.2)
{
while (areaAvailable / areaRequired > 1.2)
{
tb.Font = new Font(tb.Font.FontFamily, tb.Font.Size * 1.1F);
stringSize = gfx.MeasureString(s, tb.Font);
areaRequired = stringSize.Width * stringSize.Height * 1.1;
}
}
else
{
while (areaRequired * 1.2 > areaAvailable)
{
tb.Font = new Font(tb.Font.FontFamily, tb.Font.Size / 1.1F);
stringSize = gfx.MeasureString(s, tb.Font);
areaRequired = stringSize.Width * stringSize.Height * 1.1;
}
}
}
}
}
public static System.Windows.Point GetDpi()
{
using (var textBox = new System.Windows.Forms.TextBox()) {
using (var graphics = textBox.CreateGraphics()) {
return(new System.Windows.Point(graphics.DpiX / 96, graphics.DpiY / 96));
}
}
}
// </Snippet2>
private void CreateGraphicsButton_Click(object sender, System.EventArgs e)
{
// <Snippet3>
Graphics myGraphics = myTextBox.CreateGraphics();
myGraphics.DrawEllipse(new Pen(Color.Black, 3), 0F, 0F, 230F, 105F);
myGraphics.FillEllipse(Brushes.Goldenrod, 0F, 0F, 230F, 105F);
// </Snippet3>
}
public void SetTextBoxWidthAndHeight(System.Windows.Forms.TextBox textBox, int maxLength)
{
textBox.MaxLength = maxLength;
using (Graphics G = textBox.CreateGraphics())
{
textBox.Width = 28;
}
}
static System.Windows.Point GetGraphicsDpi()
{
System.Windows.Point dpi;
using (var textBox = new System.Windows.Forms.TextBox()) {
using (var graphics = textBox.CreateGraphics()) {
dpi = new System.Windows.Point(graphics.DpiX, graphics.DpiY);
}
}
return(dpi);
}
private void UpdateSize()
{
if (this.IsHandleCreated)
{
Size overhead = Size - _exceptionMessage.DisplayRectangle.Size;
Rectangle working = _working;
working.Size = working.Size - overhead; // Convert working to inner size
working.Width -= System.Windows.Forms.SystemInformation.VerticalScrollBarWidth;
working.Height -= System.Windows.Forms.SystemInformation.HorizontalScrollBarHeight;
Size size;
using (System.Drawing.Graphics graphics = _exceptionMessage.CreateGraphics())
{
if (_exceptionMessage.WordWrap)
{
size = Size.Ceiling(graphics.MeasureString(_exceptionMessage.Text, _exceptionMessage.Font, working.Width));
}
else
{
size = Size.Ceiling(graphics.MeasureString(_exceptionMessage.Text, _exceptionMessage.Font));
}
}
ScrollBars scrollBars = ScrollBars.None;
if (size.Height > working.Height)
{
size.Height = working.Height;
scrollBars |= ScrollBars.Vertical;
}
if (size.Width > working.Width)
{
size.Width = working.Width;
scrollBars |= ScrollBars.Horizontal;
}
_exceptionMessage.ScrollBars = scrollBars;
Element.ConstrainMin(ref size, new Size(220, 26));
size += overhead;
this.Bounds =
new Rectangle
(
new Point
(
((_working.Width / 2) - (size.Width / 2)) + _working.Left,
((_working.Height / 2) - (size.Height / 2)) + _working.Top
),
size
);
}
}
public void SetTextBoxWidthAndHeight(System.Windows.Forms.TextBox textBox, int maxLength)
{
textBox.MaxLength = maxLength;
using (Graphics G = textBox.CreateGraphics())
{
//textBox.Width = (int)(maxLength * (G.MeasureString("X", textBox.Font)).Width);
//textBox.Height = (int) (G.MeasureString("X", textBox.Font).Height);
textBox.Width = 28;
//textBox.Height = 34;
}
////int width = Year.ClientSize.Width + YearMonth.ClientSize.Width + Month.ClientSize.Width + MonthDay.ClientSize.Width + Day.ClientSize.Width;
////int height = Year.ClientSize.Height;
////this.ClientSize = new Size(width, height);
//this.Size=new Size(width,height);
}
/// <summary>
/// Fills the form using data from the Customer dataset.
/// </summary>
private void FillForm()
{
// Populate the controls from the DataSet
System.Data.DataRow drCustomer = m_dsCustomer.Tables[Customer.TN_CUSTOMER].Rows[0];
txtName.Text = drCustomer[Customer.FN_CUSTOMER_NAME].ToString();
txtCountry.Text = drCustomer[Customer.FN_COUNTRY].ToString();
txtPostalCode.Text = drCustomer[Customer.FN_POSTALCODE].ToString();
//TODO: Add the rest of the controls here
// Set the customer name width appropriate for the contents
// Create a graphics object to use to measure the width.
Graphics g = txtName.CreateGraphics();
Int32 iWidth = (Int32)g.MeasureString(txtName.Text, txtName.Font).Width + 5;
txtName.Width = iWidth;
g.Dispose();
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Handle an event when mouse enters the text box to display the whole path if it is
/// truncated. (Tooltip not currently displayed)
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
/// ------------------------------------------------------------------------------------
private void m_textBoxBackupPath_MouseEnter(object sender, System.EventArgs e)
{
Graphics graphics = m_textBoxBackupPath.CreateGraphics();
if (m_textBoxBackupPath.ClientSize.Width + 12 <
graphics.MeasureString(m_textBoxBackupPath.Text, m_textBoxBackupPath.Font).Width)
{
toolTip1.SetToolTip(m_textBoxBackupPath, m_textBoxBackupPath.Text);
toolTip1.AutoPopDelay = 3500;
toolTip1.InitialDelay = 1000;
}
else
{
toolTip1.SetToolTip(m_textBoxBackupPath, null);
}
graphics.Dispose();
}
/// <summary>
/// Returns a default TextBox.
/// Its position is based on both parameters.
/// </summary>
/// <param name="position">Position of the TextBox.</param>
/// <param name="reqWidth">Requested width, as a number of characters.</param>
/// <returns></returns>
private TextBox CreateTextBox(Position position, int reqWidth)
{
TextBox txt = new TextBox();
txt.Multiline = false;
StringBuilder sb = new StringBuilder(reqWidth < 0 ? 0 : reqWidth);
for (int i = 0; i < reqWidth; i++)
sb.Append("o"); // take 'o' as the character to measure
int width = (int)(txt.CreateGraphics().MeasureString(sb.ToString(), txt.Font).Width);
if (width < position.WidthColumnTwo)
{
txt.Width = position.WidthColumnTwo;
txt.Location = new Point(position.StartColumnTwo, position.LinePosition - 5);
}
else
{
txt.Width = position.Width;
position.LinePosition += position.LineHeight;
txt.Location = new Point(position.StartColumnOne + position.Margin, position.LinePosition);
}
txt.TabIndex = position.NextTabIndex;
txt.Name = "textBox" + position.TabIndex.ToString();
txt.Leave += _entryLeave;
return txt;
}
public static bool IsNewLineNeeded(string text, TextBox tb)
{
TextFormatFlags noPrefix = TextFormatFlags.NoPrefix;
using (Graphics graphics = tb.CreateGraphics())
{
System.Drawing.Size proposedSize = new System.Drawing.Size(0x7fffffff, 0x7fffffff);
System.Drawing.Size size2 = TextRenderer.MeasureText(graphics, text, tb.Font, proposedSize, noPrefix);
return (tb.ClientSize.Width < size2.Width);
}
}
