1 Generic Warning

VTK 开发  中是到 vtkOutputWindow 弹窗并提示Generic Warning：… 
vtkOutputWindow 弹窗
解决方法：
添加：
#include <vtkOutputWindow.h>

在 main.cpp函数中添加：
vtkOutputWindow::SetGlobalWarningDisplay(0); 即可

#include <vtkOutputWindow.h>
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	vtkOutputWindow::SetGlobalWarningDisplay(0);
	window w;
	w.show();
	return a.exec();
}

 

2.QVTKWidget was deprecated for VTK 8.1 and will be removed in a future version

You should use QVTKOpenGLWidget instead.

You can disable deprecation warning if absolutely needed by setting the cmake variable :

VTK_LEGACY_SILENT:ON

3.“QWidget: Must construct a QApplication before a QWidget”

最后查找的原因是vlc-qt库的debug和release版本混用的原因

解决方案：

CONFIG += debug_and_release

CONFIG(debug,debug | release){

LIBS += -L$$PWD/ -lTestDll

}else{

LIBS += -L$$PWD/ -lTestDlld

 

}