Question

尝试在JScrollPane中包含JTable。但问题是，每次我向表中添加另一行时，JFrame的大小都会逐渐增加（下面的屏幕截图供参考）。我不希望它这样做。显然，由于它在滚动窗格中，如果我不断向表中添加行，我希望实际显示滚动条并用于向下滚动以查看表中的较低值。

屏幕截图：http://i.imgur.com/dUqQW7N.jpg

代码：

String[] columns = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"};

Object[][] data = {
        {"Kathy", "Smith", "Snowboarding", 5, false},
        {"John", "Doe", "Rowing", 3, true},
        {"Sue", "Black", "Knitting", 2, false},
        {"Jane", "White", "Speed reading", 20, true},
        {"Joe", "Brown", "Pool", 10, false}
};

searchBox = new JTextField();
searchButton = new JButton();
rentCarButton = new JButton();
rentedCarsButton = new JButton();
table = new JTable(data, columns);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
scrollPane = new JScrollPane(table);

非常感谢任何帮助。

Answer 1

Welp答案就在我面前，我刚刚更改了代码行

##include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/highgui/highgui.hpp"
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#define MAX1 1024
#define Pxsize MAX1
#define Pysize Pxsize

//Kernel size
#define Kxsize 3
#define Kysize Kxsize
using namespace std;
using namespace cv;

unsigned short int A[Pxsize][Pysize];
unsigned short int B[Pxsize][Pysize];
unsigned short int K[Kxsize][Kysize];


int main(){
    SINGLECORE // I use it to assign the program to a particular core of the CPU
    //filter arguments
    Point anchor;
    double delta;
    int ddepth;

    //assign data between 0 and 255 to the input matrix
    int i,j;
    for (i=0; i<Pxsize; i++)
        for (j=0; j<Pysize; j++)
            A[i][j] = (i+j)%255;

    //assign data to the kernel
    //assign data between 0 and 255 to the input matrix
    for (i=0; i<Kxsize; i++)
        for (j=0; j<Kysize; j++)
            K[i][j]=1;

    cv::Mat input = cv::Mat(Pxsize, Pysize, CV_8UC1, A);
    cv::Mat output = cv::Mat(Pxsize, Pysize, CV_8UC1, B);
    cv::Mat kernel = cv::Mat::ones(Kxsize, Kysize, CV_8UC1);

    // Initialize arguments for the filter
    anchor = Point( -1, -1 );
    delta = 0;
    ddepth = -1;



        filter2D( input,   output, ddepth ,  kernel, anchor, delta, 1 );


    return 0;
}

到

table.setPreferredScrollableViewportSize(table.getPreferredSize());

我感到愚蠢。

在JScrollPane中使用JTable的问题

1 个答案: