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PORun application on startup
 

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    <p>i am wondering if its possible to solve this problem. Ive got qt application and if user tick the checkbox, i want this application to launch on startup of operating system. Ive already googled, and ive come up with this solution></p> <p>my QT application needs admin privileges in order to modify registry, so</p> <ol> <li>create manifest file ( <code>&lt;requestedExecutionLevel level="requireAdministrator" uiAccess="false"/&gt;</code>)</li> </ol> <p>2.apply this command</p> <p>mt -manifest manifestfile -outputresource:binfile.exe;1</p> <p>3.use this piece of code in QT to modify registry</p> <pre><code>void MainWindow::set_on_startup() { QSettings settings("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", QSettings::NativeFormat); if (ui-&gt;checkBox-&gt;checkState()) { QString value = QCoreApplication::applicationFilePath(); //get absolute path of running exe QString apostroph = "\""; #ifdef DEBUG ui-&gt;textEdit-&gt;append(QCoreApplication::applicationFilePath ()); #endif value.replace("/","\\"); value = apostroph + value + apostroph + " --argument"; #ifdef DEBUG ui-&gt;textEdit-&gt;append(value); #endif //write value to the register settings.setValue("name", value); } else { settings.remove("name"); } } </code></pre> <p>So, this looks good right ? BUT... application with default admin priveleges cant be launched on startup of operating system, BUT application without admin priveleges cant modify registry. So , there is one solution - tell a user, that if he wants to set this "startup" option, he first needs to start application as admin, then the application will be able to modify registry, and default privileges will remain "asInvoker", but this seems really impractical and i think that users will be discouraged by this.</p> <p>So, how to solve this problem ? how other applications solve this problem ?</p>
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    1. USAnton Giertli
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    1. COA better solution would be to request root rights not on startup of the application but on setting the "start on boot" option. Could you not just create a tip next to the button "launch on boot" saying this action requires root rights and therefore UAC to pop up? The user would not be surprised then. Althoug a solution without UAC saying anything would be better, of course.
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    2. COwell, i dont know how to acquire root privileges only after clicking on that checkbox. By the way, my current "solution" is causing UAC alert window to up and i dont consider it as something negative. As temporary solution, i will just probably leave the default priveleges "asInvoker" and write under that checkbox something like "this action requires admin priveleges, you have to launch applicatino with "run as administrator" option"
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      1. USAnton Giertli
    3. COBut still, im wondering how other application are solving this problem. For example, ive been browsing registry, and i found that Hamachi was there, and it really does start on system startup, but the application does not require admin priveleges, so how was this Registry entry made ? (probably during instalation, i guess.., but still, how user will cancel it via application if that application does not have admin priveleges)
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