Change a QList element

[mcrahr]

Hi I have a ?

I do like this in the *.h file



typedef struct{
QRect dataRect;
QString imgName;
int id;
} image;


QList<image> list;

this in the cpp file.

image myImage;
myImage.dataRect=this->rect();
myImage.id=0;
myImage.imgName="b.png";
list.append(myImage);

myImage.dataRect=QRect(10,400,167,64);
myImage.id=1;
myImage.imgName="b2.png";
list.append(myImage);

myImage.dataRect=QRect(185,400,167,64);
myImage.id=2;
myImage.imgName="b3.png";
list.append(myImage);

Now I would like to change the image name.
but it does not change in the list why ?




image myImage=list.at(a);



if (myImage.dataRect.contains(e->pos()))
{
id=a;
switch (a)
{
case 0: break;
case 1: break;
case 2: myImage.imgName="b10.png";break;
case 3: myImage.imgName="b12.png";break;
}

[PaceyIV]

You're changing only the value in the local variable myImage.

To change in the list you need to have a pointer to the right image in the list:



image *myImage=&(list.at(a));

if (myImage->dataRect.contains(e->pos()))
{
id=a;
switch (a)
{
case 0: break;
case 1: break;
case 2: myImage->imgName="b10.png";break;
case 3: myImage->imgName="b12.png";break;
}