没有匹配的函数调用'QGridLayout :: addWidget（QPushButton，int＆，int＆）

Question

嘿即时写我自己的游戏，但我不能把应该代表QGridLayout中的敌人的小部件，我已经定义了QStringList中的。^h但功能忽略.H所以对电网的指针和定义必须在函数内部本身

错误

E:\QT\Try\mainwindow.cpp:56: 
no matching function for call to 
'QGridLayout::addWidget(QPushButton, int&, int&)' 
     Grid->addWidget(QPushButton(Enemy_name),b,i); 
                ^

E:\QT\Try\mainwindow.cpp:58: Chyba: 'Enemy_list' was not declared in this scope 
     Enemy_list[i]=Enemy_name; 
     ^

的.H

#include <QMainWindow> 
#include <QStringList> 

namespace Ui { 
class MainWindow; 
} 

class MainWindow : public QMainWindow 
{ 
    Q_OBJECT 

public: 
    explicit MainWindow(QWidget *parent = 0); 
    ~MainWindow(); 

    int diff; 

    QStringList Enemy_list; 


private slots: 
    void on_actionNewGame_triggered(); 

    void on_actionLeft_triggered(); 

    void on_actionRight_triggered(); 
private: 
    Ui::MainWindow *ui; 
    void spawn(int diff); 
}; 

在.cpp

#include "mainwindow.h" 
    #include "ui_mainwindow.h" 
    #include "dialog.h" 
    #include <QStringList> 

    void MainWindow::on_actionNewGame_triggered() 
{ 
    Dialog mDialog; 
    mDialog.setModal(true); 
    mDialog.exec(); 

    switch (mDialog.on_buttonBox_accepted()){ 
    case 2: 
     this->setWindowTitle("A not Quality Ripoff -- Medium"); 
     spawn(2); 
     break; 
    case 3: 
     spawn(3); 
     this->setWindowTitle("A not Quality Ripoff -- Hard"); 
     break; 
    default: 
     spawn(1); 
     this->setWindowTitle("A not Quality Ripoff -- Easy"); 
     break; 
    } 
} 
void spawn(int diff){ 
    Ui::MainWindow *kappa; 
    const int row = diff*4; 
    int col; 
    int x=0; 
    switch (diff){ 
    case 3: 
     x=x+10; 
    case 2: 
     x=x+10; 
    default: 
     x=x+20; 
     col = x/row; 
     if (x %row >=1) col++; 

     for(int i=0;i<col;i++){ 
      for(int b=0; b<row;b++){ 

      QString Enemy_name = "Enemy_n"+QString::number(i*b); 

      QGridLayout *Grid = kappa->Enemy; 
      Grid->addWidget(QPushButton(Enemy_name),b,i); 

      Enemy_list[i]=Enemy_name; 
      } 
     } 
     break; 
    } 
} 

我会很高兴的任何帮助作为一个初学者

Answer 1

第一个错误： 变线Grid->addWidget(QPushButton(Enemy_name),b,i);到Grid->addWidget(new QPushButton(Enemy_name),b,i);

二错误：变线void spawn(int diff){到void MainWindow::spawn(int diff){