Qt中QTextEdit现实的内容不完整或者为乱码

QTextEdit现实的内容不完整或者为乱码
内容为应为00 10 10 04 00 01 45 19
显示为

内容应为00 10 10 00 00 01 04 D8

• 这篇文章：Qt类总结（一）QTextEdit 也许有你想要的答案，你可以看看

谢邀
你文件编码格式选择的是utf8吧？

你这个应该是编码格式的问题。导致字符乱码，改为utf-8编码试试

仅供参考：

#include <stdio.h>
#include <string.h>
FILE *f;
char buffer[4096];
int r,a;
void HexDump(char *buf,int len,int addr) {
    int i,j,k;
    char binstr[80];

    for (i=0;i<len;i++) {
        if (0==(i%16)) {
            sprintf(binstr,"%08x -",i+addr);
            sprintf(binstr,"%s %02x",binstr,(unsigned char)buf[i]);
        } else if (15==(i%16)) {
            sprintf(binstr,"%s %02x",binstr,(unsigned char)buf[i]);
            sprintf(binstr,"%s  ",binstr);
            for (j=i-15;j<=i;j++) {
                sprintf(binstr,"%s%c",binstr,('!'<buf[j]&&buf[j]<='~')?buf[j]:'.');
            }
            printf("%s\n",binstr);
        } else {
            sprintf(binstr,"%s %02x",binstr,(unsigned char)buf[i]);
        }
    }
    if (0!=(i%16)) {
        k=16-(i%16);
        for (j=0;j<k;j++) {
            sprintf(binstr,"%s   ",binstr);
        }
        sprintf(binstr,"%s  ",binstr);
        k=16-k;
        for (j=i-k;j<i;j++) {
            sprintf(binstr,"%s%c",binstr,('!'<buf[j]&&buf[j]<='~')?buf[j]:'.');
        }
        printf("%s\n",binstr);
    }
}
int main(int argc,char **argv) {
    if (argc<2) {
        fprintf(stderr,"Usage: %s filename.ext\n",argv[0]);
        return 2;
    }
    f=fopen(argv[1],"rb");
    if (NULL==f) {
        fprintf(stderr,"Can not open file [%s]!\n",argv[1]);
        return 1;
    }
    a=0;
    while (1) {
        r=fread(buffer,1,4096,f);
        HexDump(buffer,r,a);
        a+=r;
        if (r<4096) break;
    }
    fclose(f);
    return 0;
}

看这个是modbus协议
long a = 63;
QString s = QString::number(a, 16); // s == "3f"
QString t = QString::number(a, 16).toUpper(); // t == "3F"