passing image to other class

[zawal]

Hello!

I've written a class wich looks like this:


class ImageViewer
{


public:
ImageViewer();
QImage image;

....

}


I would like to use image in another class methods. How to do it??

[jano_alex_es]

call the variable from the object, like, for instance:

ImageViewer* myImage = new ImageViewer();
...
...
...
...
QImage objImageViewer = myImage->image;

ImageViewer* myImage = new ImageViewer();
...
...
...
...
QImage objImageViewer = myImage->image;

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but please note this is a C++ question, no QT question.

[zawal]

I've got still issue with it

my code looks like this:

first there is a main function where I create ImageViewer instance:

int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     ImageViewer imageViewer;
     imageViewer.show();
     return app.exec();
 }

int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     ImageViewer imageViewer;
     imageViewer.show();
     return app.exec();
 }

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later on there is a class, where is an QImage object created as public:

class ImageViewer 
{
 
 
public:
ImageViewer();
QImage image;
 
....
 
}

class ImageViewer 
{


public:
ImageViewer();
QImage image;

....

}

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and then I've got other class which constructor look like this:

SceneWindow::SceneWindow()
 
{
QPixmap pixmap=QPixmap::fromImage(imageViewer->image);
...

SceneWindow::SceneWindow()
    
{
QPixmap pixmap=QPixmap::fromImage(imageViewer->image);
...

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and compiler output is:

scenewindow.cpp: In constructor `SceneWindow::SceneWindow()':
scenewindow.cpp:10: error: `imageViewer' was not declared in this scope


So shortly:

we create instance of object in main(), this object contains an image and we need to use this image in method from another class.