Qt has no dependences?

["BumbleBee"]

Hey guys,so today I tried for the first time my Qt application on another computer,which has nothing to do with coding,so it has nor Qt neither c++ installed.


So,I moved the .exe alone at first and what happened?...
Lol..first it required some dlls,which is a problem that I know how to solve,but after that,when the app opened and it had no images(that I used as pixmap)...

So then I moved the images(that were missing) with the .exe then,some of them could work,but still labels double...

Can anyone help me?
I need to demonstrate the program to many people,with different Windows!

Thank ya.

What to do?

[Zlatomir]

You need a imageformats folder in the same folder as your .exe, and in that folder you copy the dll's for the image formats you used in the application.

["BumbleBee"]

Ok,I went to qt/plugins/imageformats.
Then,I created a new folder in my USB called "program"e,I put there my exe and made another folder(inside "program") called "imageformats" and moved there all the dll's,
Tried on the other pc and..same thing.

The background image and button icons won't show.

I even dragged the backg. image to the .exe,but it still doesn't show...

[Zlatomir]

Maybe it's because "hard-coded" paths, or do you use the resource system for images? If you don't then use resources to integrate the necessary images into your application.

["BumbleBee"]

My code is:

QPalette palette;
    palette.setBrush(this->backgroundRole(), QBrush(QImage("1.jpg")));
    this->setPalette(palette);
 
//And this for the buttons
 x->setIcon(QIcon("ex.png"));

QPalette palette;
    palette.setBrush(this->backgroundRole(), QBrush(QImage("1.jpg")));
    this->setPalette(palette);

//And this for the buttons
 x->setIcon(QIcon("ex.png"));

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[high_flyer]

I put there my exe and made another folder(inside "program") called "imageformats" and moved there all the dll's,

And how does your application know where to find these dlls?
You have to add the path to your DLL's to the PATH environment variable.

["BumbleBee"]

For a starnge reason it works..lol
I added

QString myPath;
    myPath = "./imageformats";
    a.addLibraryPath(myPath);

QString myPath;
    myPath = "./imageformats";
    a.addLibraryPath(myPath);

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And all works fine.Thanks guys,you always know the solution

[wysota]

Does by any chance you have a "imageformats" directory inside your "imageformats" directory?

[Zlatomir]

@high_flyer, it's the path where Qt plugins are searched, i though that the deployment path for image plugins should be: plugins/imageformats, but that doesn't work, so default behavior seems to be imageformats folder direct in the same folder as application.

I think the path to where images are stored is not correct, that is why i suggest you use qresource to store images and icons.

And you don't need all the dll's from Qt_INSTALL/imageformats you need to copy only the dlls for image type you use (example: qjpeg4.dll if you use .jpg files)

//if you don't use resources, maybe you can recreate the complete path by using QCoreApplication::applicationDirPath() and append the image name to the returned QString (if the images are in the same folder with the .exe file)
But it's more clear and easy to use resources.

LE: too late... i write to slow

["BumbleBee"]

Ok guys thanks I'll try using resources(btw does recource sys require images to be in the same folder with .exe,or they are compiled inside?)!

And wysota..I didn't understand what you asked...

[Zlatomir]

Wysota asked if you don't have something like imageformats\imageformats\qjpeg4.dll? you need to have imageformats\qjpeg4.dll (and of course other dll's for image formats you used in your application)

And resources are "compiled" inside the application. //see the link i gave you in my second post

["BumbleBee"]

Wysota asked if you don't have something like imageformats\imageformats\qjpeg4.dll? you need to have imageformats\qjpeg4.dll (and of course other dll's for image formats you used in your application)

And resources are "compiled" inside the application. //see the link i gave you in my second post

Oh..ok.
No I do not have two folders...it's imageformats/qjpeg4.dll

[wysota]

So this:

QString myPath;
myPath = "./imageformats";
a.addLibraryPath(myPath);

QString myPath;
myPath = "./imageformats";
a.addLibraryPath(myPath);

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didn't help your app in any way as it's just plain wrong.