嵌入式QT--配置文件

版权声明:引用请注明出处 https://blog.csdn.net/quange_style/article/details/71261207

在嵌入式QT中,常常需要保存用户的操作习惯
ps:在开机重启时,需要显示重启以前的状态,这就需要将用到配置文件,将相关参数保存下来,也就是说保留配置文件。
考虑到系统调用等操作,可以将其分为读,写两个操作。
步骤1:
创建结构体struct,将需要用到保存的参数一条条归类好,对应一个个模块
PS:

typedef struct
{	
	MAINBUTTONSET	qtMainButton;
	DVRCONDUTINGSET	qtDvrConductingSet;
	CHANWINSET		qtChanwinSet;
	FILEMNGSET		qtFileMngSet;
	CONDUCTINGSET qtCondutingSet;
	SYSSET QtSysSet;
	PictureSet_S	UserDefPicture;
	OSDINFO		OsdInfo;
	int ResetEn;
}QTSET,*PQTSET;

步骤2:初始化结构体

QTSET qtparam;
qtparam.PQTSET=0;
...

步骤3:读取配置文件

ReadProfileFile(&qtparam,sizeof(qtparam));
int ReadProfileFile(char *fileName, unsigned int *actualReadSize)
{
    FILE *hndlFile;
    hndlFile = fopen(fileName, "rb");
    if(hndlFile == NULL)
    {
        retVal = 0;
    }
     readDataSize = fread(curAddr, 1, chunkSize, hndlFile);
	......

    fclose(hndlFile);
}

步骤4:修改保存配置文件

WriteProfileFile(filename, &qtparam,sizeof(qtparam));
int WriteProfileFile(char *fileName, unsigned char *addr, unsigned int size)
{
    FILE *hndlFile;
    if(size==0)
        return 0;
    hndlFile = fopen(fileName,"wb");
    writeDataSize = fwrite(fileName, 1, size, hndlFile);
   .....
    fclose(hndlFile);
}

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转载自blog.csdn.net/quange_style/article/details/71261207
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