可以显示5x5的格子，且每个格子里面的数字都是随机且不重复的

QW/QW.pro

@@ -17,10 +17,12 @@ DEFINES += QT_DEPRECATED_WARNINGS
 
 SOURCES += \
     main.cpp \
-    widget.cpp
+    widget.cpp \
+    workthread.cpp
 
 HEADERS += \
-    widget.h
+    widget.h \
+    workthread.h
 
 FORMS += \
     widget.ui

QW/widget.cpp

@@ -4,15 +4,10 @@
 #include <QPen>
 #include <QBrush>
 #include <QTimer>
+#include "WorkThread.h"
 
-struct care
-{
-    int num;
-    long color;
 
-};
-
-care car[10][10];
+extern care car[5][5];
 
 Widget::Widget(QWidget *parent)
     : QWidget(parent)
@@ -35,6 +30,8 @@ Widget::Widget(QWidget *parent)
     mainrun = new QTimer(this);
     connect(mainrun,&QTimer::timeout,this,&Widget::mainrun_timeout);
     mainrun->start(1);
+    WorkThread *workthread = new WorkThread;
+    workthread->start();
 }
 
 Widget::~Widget()
@@ -54,8 +51,9 @@ void Widget::paintEvent(QPaintEvent *)
      *结尾需要end结束
      */
     QPainter p;
+    QFont font1("黑体",30,QFont::Bold,true);
     p.begin(this);
-
+    p.setFont(font1);//画家装配字体
 
     //定义画笔
     QPen pen;
@@ -76,14 +74,15 @@ void Widget::paintEvent(QPaintEvent *)
 
 
 
-#define car_size 80
-    for(int y=0;y<10;y++)
+#define car_size 110
+    for(int y=0;y<5;y++)
     {
-        for(int x=0;x<10;x++)
+        for(int x=0;x<5;x++)
         {
             brush.setColor(car[y][x].color); //设定笔刷
             p.setBrush(brush);          //笔刷交给画家
             p.drawRect(x*car_size,y*car_size,car_size,car_size);
+            p.drawText((x*car_size)+5,(y*car_size)+90,QString("%1").arg(car[y][x].num));
         }
 
     }

QW/workthread.cpp

@@ -0,0 +1,42 @@
+#include "workthread.h"
+#include <time.h>
+
+care car[5][5];
+int car_rand_buff[26];
+int car_rand_int=0;
+int car_rand=0;
+int while_buff=0;
+
+void WorkThread::run()
+{
+    srand(time(NULL));
+    for(int y=0;y<5;y++)
+    {
+        for(int x=0;x<5;x++)
+        {
+
+            do
+            {
+                while_buff=0;
+                car_rand=(rand()%25)+1;
+                for(int z=0;z<car_rand_int;z++)
+                {
+                    if(car_rand_buff[z]==car_rand)
+                    {
+                        while_buff=1;
+                    }
+                }
+            }while(while_buff);
+
+
+            car[y][x].num=car_rand;
+            car_rand_buff[car_rand_int]=car_rand;
+            car_rand_int++;
+        }
+
+    }
+    while (true)
+    {
+
+    }
+}

QW/workthread.h

@@ -0,0 +1,24 @@
+#ifndef WORKTHREAD_H
+#define WORKTHREAD_H
+
+#include <QWidget>
+#include <QThread>
+
+class WorkThread : public QThread
+{
+
+protected:
+    void run();
+
+};
+
+//****************************************************c
+
+struct care
+{
+    int num;
+    long color;
+
+};
+
+#endif // WORKTHREAD_H

build-QW-Desktop_Qt_5_14_2_MinGW_32_bit-Debug/Makefile

@@ -247,6 +247,7 @@ Makefile: ../QW/QW.pro C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/win32-g++/qmake.
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/qt_config.prf \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/win32-g++/qmake.conf \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/spec_post.prf \
+		.qmake.stash \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/exclusive_builds.prf \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/toolchain.prf \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/default_pre.prf \
@@ -275,7 +276,6 @@ Makefile: ../QW/QW.pro C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/win32-g++/qmake.
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/lib/Qt5Gui.prl \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/lib/Qt5Core.prl \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/lib/qtmain.prl \
-		.qmake.stash \
 		C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/build_pass.prf
 	$(QMAKE) -o Makefile ..\QW\QW.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug"
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/spec_pre.prf:
@@ -455,6 +455,7 @@ C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/qt_functions.prf:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/qt_config.prf:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/win32-g++/qmake.conf:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/spec_post.prf:
+.qmake.stash:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/exclusive_builds.prf:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/toolchain.prf:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/default_pre.prf:
@@ -483,7 +484,6 @@ C:/Qt/Qt5.14.2/5.14.2/mingw73_32/lib/Qt5Widgets.prl:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/lib/Qt5Gui.prl:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/lib/Qt5Core.prl:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/lib/qtmain.prl:
-.qmake.stash:
 C:/Qt/Qt5.14.2/5.14.2/mingw73_32/mkspecs/features/build_pass.prf:
 qmake: FORCE
 	@$(QMAKE) -o Makefile ..\QW\QW.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug"