[英]Program using Qt, OpenCV runs fine when started from VS, but running the executable ordinarily crashes when OpenCV functionality would be used
I'm trying to deploy my C++ program.我正在尝试部署我的 C++ 程序。 Every functionality of it works if I run the program from the VS IDE (release mode).
如果我从 VS IDE(发布模式)运行程序,它的每个功能都可以工作。 When I ordinarily run the same executable, the main window comes up fine and its non-OpenCV functionality works;
当我通常运行相同的可执行文件时,主窗口正常运行并且其非 OpenCV 功能正常工作; but when I try to open a picture and have the program use OpenCV stuff (opening it invokes the use of several OpenCV manipulations on the picture), it crashes.
但是当我尝试打开一张图片并让程序使用 OpenCV 的东西时(打开它会调用对图片的几个 OpenCV 操作),它崩溃了。
I ran windeployqt
from the Developer Command Prompt for VS 2017 successfully.我从 VS 2017 的开发人员命令提示符成功运行了
windeployqt
。 It didn't copy the OpenCV dlls next to my executable, though, so I copied opencv_world400.dll
and opencv_ffmpeg400_64.dll
next to the other dlls.不过,它没有复制我的可执行文件旁边的 OpenCV dll,所以我复制了其他 dll 旁边的
opencv_world400.dll
和opencv_ffmpeg400_64.dll
。 I assume this is the step where I'm missing something.我认为这是我遗漏了一些东西的步骤。 The folder looks like this now:
该文件夹现在看起来像这样:
I'm using VS2017 with Qt5.10.1 and OpenCV4.0.我将 VS2017 与 Qt5.10.1 和 OpenCV4.0 一起使用。 I don't think I can insert relevant code as the project is quite big and it uses OpenCV functionality extensively.
我不认为我可以插入相关代码,因为该项目非常大并且广泛使用 OpenCV 功能。
I figured it out, the problem was unrelated to OpenCV ( opencv_world400.dll
was sufficient to copy into the folder).我想通了,问题与 OpenCV 无关(
opencv_world400.dll
足以复制到文件夹中)。
The problem was: I used Qt's applicationDirPath()
, which returns the executable's path, to access a Results folder I was supposed to have previously created there, but did not.问题是:我使用 Qt 的
applicationDirPath()
,它返回可执行文件的路径,来访问我之前应该在那里创建的结果文件夹,但没有。 The program, if ran from VS, was accessing the existing Results folder in the Debug folder, even though I was running the program in release mode and applicationDirPath()
was returning the executable's path in the Release folder.该程序(如果从 VS 运行)正在访问Debug文件夹中现有的Results文件夹,即使我在发布模式下运行该程序并且
applicationDirPath()
正在返回Release文件夹中的可执行文件的路径。 When I was running the same executable ordinarily, it couldn't find the Results folder and crashed.当我通常运行相同的可执行文件时,它找不到结果文件夹并崩溃了。
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