/// <summary>
/// Windowsメッセージを処理します。
/// </summary>
/// <param name="m">処理対象の<see cref="System.Windows.Forms.Message"/></param>
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case WindowMessages.WM_PAINT:
if (!DesignMode && !ContainsFocus && !ReadOnly && Enabled && Text.IsEmpty())
this.DrawWaterMark(Font, WaterMark, WaterMarkColor, new Point(1, 1));
break;
case WindowMessages.WM_KEYDOWN:
if (m.WParam.ToInt32() == (int)Keys.Delete)
{
TextChangingEventArgs e1 = new TextChangingEventArgs(this.CreateNewText(string.Empty, true));
this.OnTextChanging(e1);
if (e1.Cancel)
{
m.Result = new IntPtr(1); // true
return;
}
}
break;
case WindowMessages.WM_CHAR:
TextChangingEventArgs e2 = new TextChangingEventArgs(CreateNewText(Convert.ToString((char)(m.WParam.ToInt32()))));
this.OnTextChanging(e2);
if (e2.Cancel)
return;
break;
case WindowMessages.WM_PASTE:
string clipText = Clipboard.GetDataObject().GetData(DataFormats.Text) as string;
if (clipText != null)
{
TextChangingEventArgs e3 = new TextChangingEventArgs(this.CreateNewText(clipText));
this.OnTextChanging(e3);
if (e3.Cancel)
return;
}
break;
}
base.WndProc(ref m);
}
/// <summary>
/// TextChangingを発生させます。
/// </summary>
/// <param name="e">イベントデータを格納している<see cref="Ricordanza.WinFormsUI.Forms.TextChangingEventArg"/>。</param>
protected virtual void OnTextChanging(TextChangingEventArgs e)
{
if (TextChanging != null)
TextChanging(this, e);
}
