Control.ImeModeChanged Event
Definition
public:
event EventHandler ^ ImeModeChanged;public event EventHandler ImeModeChanged;member this.ImeModeChanged : EventHandler Public Custom Event ImeModeChanged As EventHandler Examples
El siguiente ejemplo de código es un controlador de eventos que se ejecuta cuando cambia el valor de la propiedad Text.The following code example is an event handler that is executed when the Text property value changes. La clase Control tiene varios métodos con el patrón de nombre propertynameChanged que se producen cuando cambia el valor de PropertyName correspondiente (PropertyName representa el nombre de la propiedad correspondiente).The Control class has several methods with the name pattern PropertyNameChanged that are raised when the corresponding PropertyName value changes (PropertyName represents the name of the corresponding property).
En el ejemplo de código siguiente se cambia el ForeColor de una TextBox que muestra los datos de moneda.The following code example changes the ForeColor of a TextBox displaying currency data. En el ejemplo se convierte el texto en un número decimal y se cambia el ForeColor a Color.Red si el número es negativo y Color.Black si el número es positivo.The example converts the text to a decimal number and changes the ForeColor to Color.Red if the number is negative and to Color.Black if the number is positive. Este ejemplo requiere que tenga un Form que contenga un TextBox.This example requires that you have a Form that contains a TextBox.
private:
void currencyTextBox_TextChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
{
try
{
// Convert the text to a Double and determine if it is a negative number.
if ( Double::Parse( currencyTextBox->Text ) < 0 )
{
// If the number is negative, display it in Red.
currencyTextBox->ForeColor = Color::Red;
}
else
{
// If the number is not negative, display it in Black.
currencyTextBox->ForeColor = Color::Black;
}
}
catch ( Exception^ )
{
// If there is an error, display the text using the system colors.
currencyTextBox->ForeColor = SystemColors::ControlText;
}
}
private void currencyTextBox_TextChanged(object sender, EventArgs e)
{
try
{
// Convert the text to a Double and determine if it is a negative number.
if(double.Parse(currencyTextBox.Text) < 0)
{
// If the number is negative, display it in Red.
currencyTextBox.ForeColor = Color.Red;
}
else
{
// If the number is not negative, display it in Black.
currencyTextBox.ForeColor = Color.Black;
}
}
catch
{
// If there is an error, display the text using the system colors.
currencyTextBox.ForeColor = SystemColors.ControlText;
}
}
Private Sub currencyTextBox_TextChanged(sender As Object, _
e As EventArgs) Handles currencyTextBox.TextChanged
Try
' Convert the text to a Double and determine if it is a negative number.
If Double.Parse(currencyTextBox.Text) < 0 Then
' If the number is negative, display it in Red.
currencyTextBox.ForeColor = Color.Red
Else
' If the number is not negative, display it in Black.
currencyTextBox.ForeColor = Color.Black
End If
Catch
' If there is an error, display the text using the system colors.
currencyTextBox.ForeColor = SystemColors.ControlText
End Try
End Sub
Remarks
Este evento se desencadena si se cambia la propiedad ImeMode mediante una modificación mediante programación o a través de interacción.This event is raised if the ImeMode property is changed by either a programmatic modification or through interaction.
Los controles que no admiten administradores de métodos de entrada nunca generarán este evento.Controls that do not support Input Method Managers will never raise this event.
Para obtener más información sobre el manejo de eventos, consulte controlar y provocar eventos.For more information about handling events, see Handling and Raising Events.