MQL5参考标准程序库面板和对话框CDialogClientAreaHeight CreateOnEventCaptionAddCreateWhiteBorderCreateBackgroundCreateCaptionCreateButtonCloseCreateClientAreaOnClickCaptionOnClickButtonCloseClientAreaVisibleClientAreaLeftClientAreaTopClientAreaRightClientAreaBottomClientAreaWidthClientAreaHeightOnDialogDragStartOnDialogDragProcessOnDialogDragEnd ClientAreaHeight 获取客户区域控件高度。 int ClientAreaHeight() 返回值 客户区域控件高度。 ClientAreaWidth OnDialogDragStart