MeasureItemEventArgs.ItemHeight 속성
정의
중요
일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.
Index로 지정된 항목의 높이를 가져오거나 설정합니다.
public:
property int ItemHeight { int get(); void set(int value); };public int ItemHeight { get; set; }member this.ItemHeight : int with get, setPublic Property ItemHeight As Integer속성 값
측정된 항목의 높이입니다.
예제
다음 코드 예제를 사용 하는 방법에 설명 합니다 Graphics 속성에 있는 항목의 사용자 지정 그리기를 수행 하는 ListBox합니다.
public ref class Form1: public System::Windows::Forms::Form
{
private:
System::Windows::Forms::ListBox^ listBox1;
System::ComponentModel::Container^ components;
public:
~Form1()
{
if ( components != nullptr )
{
delete components;
}
}
private:
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent()
{
this->listBox1 = gcnew System::Windows::Forms::ListBox;
this->SuspendLayout();
//
// listBox1
//
this->listBox1->DrawMode = System::Windows::Forms::DrawMode::OwnerDrawVariable;
this->listBox1->Location = System::Drawing::Point( 16, 48 );
this->listBox1->Name = "listBox1";
this->listBox1->SelectionMode = System::Windows::Forms::SelectionMode::MultiExtended;
this->listBox1->Size = System::Drawing::Size( 256, 134 );
this->listBox1->TabIndex = 0;
this->listBox1->MeasureItem += gcnew System::Windows::Forms::MeasureItemEventHandler( this, &Form1::listBox1_MeasureItem );
this->listBox1->DrawItem += gcnew System::Windows::Forms::DrawItemEventHandler( this, &Form1::listBox1_DrawItem );
//
// Form1
//
this->ClientSize = System::Drawing::Size( 292, 273 );
array<System::Windows::Forms::Control^>^temp0 = {this->listBox1};
this->Controls->AddRange( temp0 );
this->Name = "Form1";
this->Text = "Form1";
this->ResumeLayout( false );
}
void listBox1_MeasureItem( Object^ /*sender*/, MeasureItemEventArgs^ e )
{
System::Drawing::Font^ font = (dynamic_cast<ListBoxFontItem^>(listBox1->Items[ e->Index ]))->Font;
SizeF stringSize = e->Graphics->MeasureString( font->Name, font );
// Set the height and width of the item
e->ItemHeight = (int)stringSize.Height;
e->ItemWidth = (int)stringSize.Width;
}
// For efficiency, cache the brush to use for drawing.
SolidBrush^ foreColorBrush;
void listBox1_DrawItem( Object^ /*sender*/, DrawItemEventArgs^ e )
{
Brush^ brush;
// Create the brush using the ForeColor specified by the DrawItemEventArgs
if ( foreColorBrush == nullptr )
foreColorBrush = gcnew SolidBrush( e->ForeColor );
else
if ( foreColorBrush->Color != e->ForeColor )
{
// The control's ForeColor has changed, so dispose of the cached brush and
// create a new one.
delete foreColorBrush;
foreColorBrush = gcnew SolidBrush( e->ForeColor );
}
// Select the appropriate brush depending on if the item is selected.
// Since State can be a combinateion (bit-flag) of enum values, you can't use
// "==" to compare them.
if ( (e->State & DrawItemState::Selected) == DrawItemState::Selected )
brush = SystemBrushes::HighlightText;
else
brush = foreColorBrush;
// Perform the painting.
System::Drawing::Font^ font = (dynamic_cast<ListBoxFontItem^>(listBox1->Items[ e->Index ]))->Font;
e->DrawBackground();
e->Graphics->DrawString( font->Name, font, brush, e->Bounds );
e->DrawFocusRectangle();
}
public:
/// <summary>
/// A wrapper class for use with storing Fonts in a ListBox. Since ListBox uses the
/// ToString() of its items for the text it displays, this class is needed to return
/// the name of the font, rather than its ToString() value.
/// </summary>
ref class ListBoxFontItem
{
public:
System::Drawing::Font^ Font;
ListBoxFontItem( System::Drawing::Font^ f )
{
Font = f;
}
virtual String^ ToString() override
{
return Font->Name;
}
};
};
[STAThread]
int main()
{
Application::Run( gcnew Form1 );
}
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.ListBox listBox1;
private System.ComponentModel.Container components = null;
protected override void Dispose(bool disposing)
{
if( disposing )
{
if ( components != null )
components.Dispose();
if ( foreColorBrush != null )
foreColorBrush.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.listBox1 = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// listBox1
//
this.listBox1.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawVariable;
this.listBox1.Location = new System.Drawing.Point(16, 48);
this.listBox1.Name = "listBox1";
this.listBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;
this.listBox1.Size = new System.Drawing.Size(256, 134);
this.listBox1.TabIndex = 0;
this.listBox1.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.listBox1_MeasureItem);
this.listBox1.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.listBox1_DrawItem);
//
// Form1
//
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.listBox1});
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void listBox1_MeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
{
Font font = ((ListBoxFontItem)listBox1.Items[e.Index]).Font;
SizeF stringSize = e.Graphics.MeasureString(font.Name, font);
// Set the height and width of the item
e.ItemHeight = (int)stringSize.Height;
e.ItemWidth = (int)stringSize.Width;
}
// For efficiency, cache the brush to use for drawing.
private SolidBrush foreColorBrush;
private void listBox1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
Brush brush;
// Create the brush using the ForeColor specified by the DrawItemEventArgs
if ( foreColorBrush == null )
{
foreColorBrush = new SolidBrush(e.ForeColor);
}
else if ( foreColorBrush.Color != e.ForeColor )
{
// The control's ForeColor has changed, so dispose of the cached brush and
// create a new one.
foreColorBrush.Dispose();
foreColorBrush = new SolidBrush(e.ForeColor);
}
// Select the appropriate brush depending on if the item is selected.
// Since State can be a combinateion (bit-flag) of enum values, you can't use
// "==" to compare them.
if ( (e.State & DrawItemState.Selected) == DrawItemState.Selected )
brush = SystemBrushes.HighlightText;
else
brush = foreColorBrush;
// Perform the painting.
Font font = ((ListBoxFontItem)listBox1.Items[e.Index]).Font;
e.DrawBackground();
e.Graphics.DrawString(font.Name, font, brush, e.Bounds);
e.DrawFocusRectangle();
}
/// <summary>
/// A wrapper class for use with storing Fonts in a ListBox. Since ListBox uses the
/// ToString() of its items for the text it displays, this class is needed to return
/// the name of the font, rather than its ToString() value.
/// </summary>
public class ListBoxFontItem
{
public Font Font;
public ListBoxFontItem(Font f)
{
Font = f;
}
public override string ToString()
{
return Font.Name;
}
}
}
Public Class Form1
Inherits System.Windows.Forms.Form
Private WithEvents listBox1 As System.Windows.Forms.ListBox
Private components As System.ComponentModel.Container = Nothing
Private FontSize As Single = 12.0F
'
' This sample displays a ListBox that contains a list of all the fonts
' installed on the system and draws each item in its respective font.
'
Public Sub New()
InitializeComponent()
' Populate control with the fonts installed on the system.
Dim families As FontFamily() = FontFamily.Families
Dim family As FontFamily
For Each family In families
Dim style As FontStyle = FontStyle.Regular
' Monotype Corsiva is only available in italic
If family.Name = "Monotype Corsiva" Then
style = style Or FontStyle.Italic
End If
listBox1.Items.Add(New ListBoxFontItem(New Font(family.Name, FontSize, style, GraphicsUnit.Point)))
Next family
End Sub
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If (components IsNot Nothing) Then
components.Dispose()
End If
If (foreColorBrush IsNot Nothing) Then
foreColorBrush.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
Private Sub InitializeComponent()
Me.listBox1 = New System.Windows.Forms.ListBox()
Me.SuspendLayout()
'
' listBox1
'
Me.listBox1.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawVariable
Me.listBox1.Location = New System.Drawing.Point(16, 48)
Me.listBox1.Name = "listBox1"
Me.listBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended
Me.listBox1.Size = New System.Drawing.Size(256, 134)
Me.listBox1.TabIndex = 0
'
' Form1
'
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.listBox1})
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
End Sub
<STAThread()> Shared Sub Main()
Application.Run(New Form1())
End Sub
Private Sub listBox1_MeasureItem(ByVal sender As Object, ByVal e As System.Windows.Forms.MeasureItemEventArgs) Handles listBox1.MeasureItem
Dim font As Font = CType(listBox1.Items(e.Index), ListBoxFontItem).Font
Dim stringSize As SizeF = e.Graphics.MeasureString(font.Name, font)
' Set the height and width of the item
e.ItemHeight = CInt(stringSize.Height)
e.ItemWidth = CInt(stringSize.Width)
End Sub
' For efficiency, cache the brush used for drawing.
Private foreColorBrush As SolidBrush
Private Sub listBox1_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles listBox1.DrawItem
Dim brush As Brush
' Create the brush using the ForeColor specified by the DrawItemEventArgs
If foreColorBrush Is Nothing Then
foreColorBrush = New SolidBrush(e.ForeColor)
Else
If Not foreColorBrush.Color.Equals(e.ForeColor) Then
' The control's ForeColor has changed, so dispose of the cached brush and
' create a new one.
foreColorBrush.Dispose()
foreColorBrush = New SolidBrush(e.ForeColor)
End If
End If
' Select the appropriate brush depending on if the item is selected.
' Since State can be a combinateion (bit-flag) of enum values, you can't use
' "==" to compare them.
If (e.State And DrawItemState.Selected) = DrawItemState.Selected Then
brush = SystemBrushes.HighlightText
Else
brush = foreColorBrush
End If
' Perform the painting.
Dim font As Font = CType(listBox1.Items(e.Index), ListBoxFontItem).Font
e.DrawBackground()
e.Graphics.DrawString(font.Name, font, brush, e.Bounds.X, e.Bounds.Y)
e.DrawFocusRectangle()
End Sub
'
' A wrapper class for use with storing Fonts in a ListBox. Since ListBox uses the
' ToString() of its items for the text it displays, this class is needed to return
' the name of the font, rather than its ToString() value.
'
Public Class ListBoxFontItem
Public Font As Font
Public Sub New(ByVal f As Font)
Font = f
End Sub
Public Overrides Function ToString() As String
Return Font.Name
End Function
End Class
End Class