There are instances that you download official examples from http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt. but got error like "QWidget: Must construct a QApplication before a QWidget" during runtime. It is most probably due to the debug and release conflict between Qt libaray and your exe file. Just rebuild your exe file by set CMAKE_BUILD_TYPE to Debug or Release correspondingly. It can be done by modifying CMakefile.txt as
--------------------------------------------
set(CMAKE_BUILD_TYPE Debug) or set(CMAKE_BUILD_TYPE Release)
-------------------------------------------
or running cmake like
-------------------------------------------
cmake -DCMAKE_BUILD_TYPE=Release
-------------------------------------------
VS Code下cmake, c++编译，调试环境的构成步骤
1 下载必须extension 按[Ctrl+Shift+X]打开extension窗口，选择安装"C/C++", "CMake", "CMake Tools" 2 在VSCode下打开作业目录 ...
-
假设时间步i中的所有物理量X i 已知, 如果时间步i+1中的所有物理量X i+1 可以表为X i 的显函数 （1） X i+1 = F(X i ) （注；本文以下标i，i+1等表示时间步） 则该物理量X可以显式计算。而如果 （2） ...
-
学过连续体力学(包括固体力学,流体力学等)都知道应力张量是对称的(下面将说明它是有条件的)。 对于初学者， 这似乎有些难于理解， 如 http://forum.simwe.com/forum.php?mod=viewthread&tid=503234&hig... -
话说黄帝蚩尤大战于涿鹿, 其时浓雾弥漫, 不知东西. 黄帝造指南車辨识道路...... Fig.1 Parralel transport of a vector along a great circle of the sphere 现在考虑A部落的士兵在指南車的...