/// <summary>
/// Opens a new Text Editor window instance as a child window and opens an existing text file with it.
/// </summary>
private void FileOpen(object sender, EventArgs e)
{
// If there's at least one MdiChild.
if (this.MdiChildren.Length > 0)
{
// If current window is a text editor window.
if (this.ActiveMdiChild.GetType() == typeof(formTextEditor))
{
// Cast the active window to a texteditor window.
formTextEditor texteditorInstance = (formTextEditor)this.ActiveMdiChild;
// Call the active window's open operation.
texteditorInstance.FileOpen(sender, e);
}
// The current window is not a textedtor window. Report that.
else
{
MessageBox.Show("Open is not supported for the current active window.", "Open Not Suported");
}
}
// There is no child window. Report that.
else
{
formTextEditor texteditorInstance = new formTextEditor();
texteditorInstance.MdiParent = this;
texteditorInstance.Show();
// Cast the active window to a whiteboard window.
formTextEditor texteditorInstance2 = (formTextEditor)this.ActiveMdiChild;
// Call the active window's copy operation.
texteditorInstance2.FileOpen(sender, e);
}
}
/// <summary>
/// Opens a new Text Editor window instance as a child window.
/// </summary>
private void FileNew(object sender, EventArgs e)
{
formTextEditor texteditorInstance = new formTextEditor();
texteditorInstance.MdiParent = this;
texteditorInstance.Show();
}