There are a few small details that need to be recorded here in the afternoon writing program.
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QProcess *process =
new QProcess(
this
);
QFileInfo fileinfo(appUrl);
QString appPath = QApplication::applicationDirPath()+SAVEDIR+
"/"
+fileinfo.fileName();
bool res = process->startDetached(appPath,QStringList());
if (res)
{
accept();
}
else
{
MyHelper::ShowMessageBoxError(
"下载完成但自动升级失败,请手工安装升级包!"
);
QDesktopServices::openUrl(QUrl::fromLocalFile(QApplication::applicationDirPath()+SAVEDIR));
reject();
}
|
This was written in the original code:
process->startDetached(appPath);
There is no problem with the test environment, but the production environment cannot invoke external programs and eventually discovers that the file path of the production environment
C:\Program Files (x86)\...
With a space, causing the call to fail, so Google then tries to
process->startDetached(appPath,QStringList());
Problem solved.
QDesktopServices::openUrl(QUrl(QApplication::applicationDirPath()+SAVEDIR));
The same problem exists in this place, and if you use qurl::fromlocalfile for processing, you can open the folder normally:
QDesktopServices::openUrl(QUrl::fromLocalFile(QApplication::applicationDirPath()+SAVEDIR));
In addition, there is a problem with this code-Independent: QT Call VC write dynamic Library, VC need to use C way output function, otherwise MinGW32 compile process will error, namely:
Example VC DLL header file:
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#ifndef cdoublereaderdll #ifdef cdoublereaderdll_exports #define cdoublereaderdll extern "C" __declspec (dllexport) #else #define cdoublereaderdll extern" C "__declspec (dllimport) #endif #endif   # define buffersize # define ReadTimeout //open serial port Cdoublereaderdll bool _stdcall Rd_open ( int iport,unsigned long ibaudrate); ... |
Examples of calls in QT:
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1234 |
extern "C" { #include "drivers/CdoubleReaderDll.h" } |
Reprint Please specify: Under the Sycamore Tree»QT open External programs and folders to pay attention to the details
http://www.pfeng.org/archives/808
QT Open external programs and folders need to pay attention to the details (QT call VC write dynamic Library, VC need to use C way output function, otherwise MinGW32 compile process will error)