您好，请看下面这个问题，是关于QT connect函数的用法

Question

代码如下，connect(pushbuttonSet,SIGNAL(clicked()),chatform,SLOT(show()));//用关联实现窗口的弹出//pushubuttonSet是按钮名称，chatform是要弹出的窗口的类出现错误：expected constructor, destructor, or type conversion before '(' token按照你的方法改正之后会出现这个问题错误:'pushbuttonSet' was not declared in this scope