/// <summary>
/// Detect the window type,; if it supports paste, call that window's paste operation.
/// </summary>
private void EditPaste(object sender, EventArgs e)
{
// If there's at least one MdiChild.
if (this.MdiChildren.Length > 0)
{
// If current window is a whiteboard window.
if (this.ActiveMdiChild.GetType() == typeof(formWhiteboard))
{
// Cast the active window to a whiteboard window.
formWhiteboard whiteboardInstance = (formWhiteboard)this.ActiveMdiChild;
// Call the active window's paste operation.
whiteboardInstance.EditPaste(sender, e);
}
// If current window is a whiteboard window.
else if (this.ActiveMdiChild.GetType() == typeof(formTextEditor))
{
// Cast the active window to a whiteboard window.
formTextEditor texteditorInstance = (formTextEditor)this.ActiveMdiChild;
// Call the active window's paste operation.
texteditorInstance.EditPaste(sender, e);
}
// The current window is not a whiteboard window. Report that.
else
{
MessageBox.Show("Paste is not supported for the current active window.", "Paste Not Suported");
}
}
// There is no child window. Report that.
else
{
MessageBox.Show("You must select a window that allows paste to do that.", "Paste Not Supported");
}
}
/// <summary>
/// Opens a new Whiteboard window instance as a child window.
/// </summary>
private void WindowNewWhiteboard(object sender, EventArgs e)
{
formWhiteboard whiteboardInstance = new formWhiteboard();
whiteboardInstance.MdiParent = this;
whiteboardInstance.Show();
}
/// <summary>
/// Open a save dialog and save the file to the location chosen by the user.
/// </summary>
private void FileSaveAs(object sender, EventArgs e)
{
// Check if windows are actually open.
if (this.MdiChildren.Length > 0)
{
// If the selected window is a whiteboard window.
if (this.ActiveMdiChild.GetType() == typeof(formWhiteboard))
{
// Call the whiteboard window's Save As function.
formWhiteboard whiteboardInstance = (formWhiteboard)this.ActiveMdiChild;
whiteboardInstance.FileSaveAs(sender, e);
}
// If the selected window is a text edtior window.
else if (this.ActiveMdiChild.GetType() == typeof(formTextEditor))
{
// Cast the active window to a texteditor window.
formTextEditor texteditorInstance = (formTextEditor)this.ActiveMdiChild;
// Call the active window's save operation.
texteditorInstance.FileSaveAs(sender, e);
}
// Otherwise, this is some other window that doesn't allow saving. Report error.
else
{
MessageBox.Show("This window type does not support saving.", "Save As Not Supported");
}
}
// No child windows are open. Report an error.
else
{
MessageBox.Show("You need to have an open window to save.", "Save As Not Supported");
}
}
