<![CDATA[Problems when i launch Qt executable from folder]]>Hey guys,

I have a little problem when i try to lunch my Qt application from folder and not from Qt IDE. If I launch the application from IDE the interface is ok (all widgets at their place) but after i copy all the needed Qt *.dll in the release folder the application run but pop up an empty window.

Has somebody any idea about how can i fix this problem and why is happening this?
Thank you :)

]]>https://forum.qt.io/topic/78490/problems-when-i-launch-qt-executable-from-folderRSS for NodeThu, 23 Apr 2026 10:01:43 GMTFri, 21 Apr 2017 09:16:33 GMT60<![CDATA[Reply to Problems when i launch Qt executable from folder on Tue, 25 Apr 2017 16:33:21 GMT]]>Thanks @Ni-Sumi :)

]]>https://forum.qt.io/post/389917https://forum.qt.io/post/389917Tue, 25 Apr 2017 16:33:21 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Tue, 25 Apr 2017 09:10:00 GMT]]>@Adrian.Aioanei

To mark it as solved.

TopicTools on the top and select "mark as solved"

]]>https://forum.qt.io/post/389845https://forum.qt.io/post/389845Tue, 25 Apr 2017 09:10:00 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Tue, 25 Apr 2017 09:06:09 GMT]]>Yes, i have
Sorry for my delay. :D
There was the problem. Now works fine.
Thank you very much all. :D
PS: I don't know how to mark as solved this topic.

]]>https://forum.qt.io/post/389843https://forum.qt.io/post/389843Tue, 25 Apr 2017 09:06:09 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Sat, 22 Apr 2017 20:25:59 GMT]]>Which version of Qt are you using ?

Did you setup the .pro file the same way ?

]]>https://forum.qt.io/post/389345https://forum.qt.io/post/389345Sat, 22 Apr 2017 20:25:59 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Sat, 22 Apr 2017 18:38:33 GMT]]>Yes. I don't remember if i have setup something to my previews project, but the think is the second doesn't work.

]]>https://forum.qt.io/post/389336https://forum.qt.io/post/389336Sat, 22 Apr 2017 18:38:33 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Sat, 22 Apr 2017 17:13:48 GMT]]>Do you mean from Qt Creator ?

]]>https://forum.qt.io/post/389323https://forum.qt.io/post/389323Sat, 22 Apr 2017 17:13:48 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Sat, 22 Apr 2017 06:01:50 GMT]]>Yes @SGaist , that was the problem.
The above error appears in qt creator when i have created the new project and i don't understand why.
I just made a new project and i have copy all the file from the old one to the new one and show this error when i try to launch.
The old project works fine without any error.
Do i need to setup something from project configuration ?

]]>https://forum.qt.io/post/389297https://forum.qt.io/post/389297Sat, 22 Apr 2017 06:01:50 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 21:49:24 GMT]]>Hi,

You should use the -qml parameter of windeployqt so that it can go parse your application qml files and deploy what's needed to support them.

]]>https://forum.qt.io/post/389237https://forum.qt.io/post/389237Fri, 21 Apr 2017 21:49:24 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 15:44:10 GMT]]>I have try on a new workstation and i have rebuild the project but the result is the same. I have made deploy using windeployqt following this video link. I have study the executable with dependency walker show me some missing dll. I was thinking the dll problem is solved by windeployqt . Here is a print
alt text
That dll name doesn't tell to much.
PS: I have also try to make an empty QML Quick 2 Application and make deploy. Also doesn't work...

UPDATE : I have close the application and rebuild again and now say :

qrc:/test.qml:4:1: module "QtQuick.Controls" is not installed
qrc:/test.qml:5:1: module "QtQuick.Controls.Styles" is not installed
qrc:/test.qml:3:1: module "QtQuick.Window" is not installed
qrc:/test.qml:1:1: module "QtQuick" is not installed
qrc:/test.qml:4:1: module "QtQuick.Controls" is not installed
qrc:/test.qml:5:1: module "QtQuick.Controls.Styles" is not installed
qrc:/test.qml:3:1: module "QtQuick.Window" is not installed
qrc:/test.qml:1:1: module "QtQuick" is not installed
qrc:/test.qml:4:1: module "QtQuick.Controls" is not installed
qrc:/test.qml:5:1: module "QtQuick.Controls.Styles" is not installed
qrc:/test.qml:3:1: module "QtQuick.Window" is not installed
qrc:/test.qml:1:1: module "QtQuick" is not installed
qrc:/test.qml:4:1: module "QtQuick.Controls" is not installed
qrc:/test.qml:5:1: module "QtQuick.Controls.Styles" is not installed
qrc:/test.qml:3:1: module "QtQuick.Window" is not installed

I have Qt 5.8.0

]]>https://forum.qt.io/post/389156https://forum.qt.io/post/389156Fri, 21 Apr 2017 15:44:10 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 12:29:50 GMT]]>I will try and also i will try on a new machine to see if the result is the same.
I will came back with results.
Thanks :)

]]>https://forum.qt.io/post/389113https://forum.qt.io/post/389113Fri, 21 Apr 2017 12:29:50 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 12:26:33 GMT]]>@Adrian.Aioanei Set QT_DEBUG_PLUGINS to != 0 before starting your app in cmd and see whether any plug-ins are missing or failed to load. See http://doc.qt.io/qt-5/debug.html

]]>https://forum.qt.io/post/389112https://forum.qt.io/post/389112Fri, 21 Apr 2017 12:26:33 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 11:54:47 GMT]]>Yes, that's what i have done but still doesn't work. Every time when i launch my application popup a little window witch doesn't have any connection with my application. Here is what i get.
alt text
This is not how looks my application when i lunch from Qt. It has some buttons, labels and so on.

]]>https://forum.qt.io/post/389108https://forum.qt.io/post/389108Fri, 21 Apr 2017 11:54:47 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 11:45:55 GMT]]>@Adrian.Aioanei Build directory? Why? You want to deploy your app, right? Check http://doc.qt.io/qt-5/windows-deployment.html

]]>https://forum.qt.io/post/389105https://forum.qt.io/post/389105Fri, 21 Apr 2017 11:45:55 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 11:25:34 GMT]]>I have try and also doesn't work.
Can have a connection with the path to the build directory?
I have change that path from Qt and now i receive a warning and say "The build directory needs to be at the same level as the source directory".

]]>https://forum.qt.io/post/389100https://forum.qt.io/post/389100Fri, 21 Apr 2017 11:25:34 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 10:19:27 GMT]]>Thank you for your replay @J-Hilk , @Ni-Sumi
I will try when i will go back to my pc to see if this solution solve the problem. :)

]]>https://forum.qt.io/post/389086https://forum.qt.io/post/389086Fri, 21 Apr 2017 10:19:27 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 10:06:09 GMT]]>@Adrian.Aioanei You also should check whether you copied all needed plug-ins

]]>https://forum.qt.io/post/389081https://forum.qt.io/post/389081Fri, 21 Apr 2017 10:06:09 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 10:05:31 GMT]]>@Adrian.Aioanei

Probably , you might be missed soem additional lbs. Use Dependency Walker .
check these Qt deploy tools on windows and http://doc.qt.io/qt-5/deployment.html

]]>https://forum.qt.io/post/389079https://forum.qt.io/post/389079Fri, 21 Apr 2017 10:05:31 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 10:00:03 GMT]]>@Adrian.Aioanei fixed the link,

yeah, that won't be enough follow the steps and post here if it doesn't work, or you need help.

]]>https://forum.qt.io/post/389077https://forum.qt.io/post/389077Fri, 21 Apr 2017 10:00:03 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 09:52:41 GMT]]>Hey @J-Hilk
Your link doesn't work.:D
What i have done is to copy from Qt bin folder the dll that my application need (QtCore, QtGui, etc).

]]>https://forum.qt.io/post/389075https://forum.qt.io/post/389075Fri, 21 Apr 2017 09:52:41 GMT<![CDATA[Reply to Problems when i launch Qt executable from folder on Fri, 21 Apr 2017 09:58:54 GMT]]>@Adrian.Aioanei
What exactly do you mean with

after i copy all the needed Qt *.dll in the release folder

If you just double clicked your exe and searched and copied the dll's that poped up as missing, than you defenitly miss some files :)

Take a look here last entry Platform-Specific Notes is what you should check, depending on your platform, you'll find tools/guidlines how to deploy your application.

]]>https://forum.qt.io/post/389068https://forum.qt.io/post/389068Fri, 21 Apr 2017 09:58:54 GMT