// Called when the value in the window must be validated.
// This function can pop up an error message.
// Called when the value in the window must be validated.
// This function can pop up an error message.
// Called to transfer data to the window
virtual bool TransferToWindow() { return false; }
// Called to transfer data from the window
// Called to transfer data to the window
virtual bool TransferToWindow() { return false; }
// Called to transfer data from the window