Question

求助，请问qt里面我写了一个槽函数，运行程序是，怎么没反应额

void QtGuiApplication4::Standardslot()
{
if (ui->comboBox->currentIndex() == 1) G = 1;
else if (ui->comboBox->currentIndex() == 2) G = 2;
else if (ui->comboBox->currentIndex() == 3) G = 3;
else if (ui->comboBox->currentIndex() == 4) G = 4;
}这个是槽函数

if (G = 1) part->SetFileName("standard_ankle.stl");
else if (G = 2) part->SetFileName("standard_elbow.stl");
else if (G = 3) part->SetFileName("standard_wrist.stl");
else if (G = 4) part->SetFileName("standard_wrist_st.stl");
为啥只能看到第一个文件额

Answer 1

你得用信号关联槽函数才行啊，不然谁来调用槽函数

追问

connect(ui->comboBox, SIGNAL(currentIndexChanged(QString)), this, SLOT(Standardslot()));这个吗，我写了额

追答

没注意看代码，判断是否相等，应该是用==，你if语句用的是赋值操作符，不是相等操作符