ENH (#3463): adding MITK_ERROR in case an invalied QmitkRenderWindow has been set
ENH (#3463): adding MITK_ERROR in case an invalied QmitkRenderWindow has been set


RabadanLab/MITKats,lsanzdiaz/MITK-BiiG,NifTK/MITK,lsanzdiaz/MITK-BiiG,iwegner/MITK,nocnokneo/MITK,danielknorr/MITK,fmilano/mitk,nocnokneo/MITK,MITK/MITK,rfloca/MITK,NifTK/MITK,RabadanLab/MITKats,iwegner/MITK,NifTK/MITK,danielknorr/MITK,NifTK/MITK,lsanzdiaz/MITK-BiiG,MITK/MITK,fmilano/mitk,danielknorr/MITK,NifTK/MITK,RabadanLab/MITKats,fmilano/mitk,NifTK/MITK,rfloca/MITK,lsanzdiaz/MITK-BiiG,iwegner/MITK,iwegner/MITK,MITK/MITK,MITK/MITK,danielknorr/MITK,RabadanLab/MITKats,lsanzdiaz/MITK-BiiG,iwegner/MITK,danielknorr/MITK,danielknorr/MITK,lsanzdiaz/MITK-BiiG,MITK/MITK,nocnokneo/MITK,fmilano/mitk,lsanzdiaz/MITK-BiiG,nocnokneo/MITK,rfloca/MITK,nocnokneo/MITK,rfloca/MITK,rfloca/MITK,nocnokneo/MITK,danielknorr/MITK,rfloca/MITK,MITK/MITK,nocnokneo/MITK,rfloca/MITK,fmilano/mitk,RabadanLab/MITKats,iwegner/MITK,fmilano/mitk,lsanzdiaz/MITK-BiiG,RabadanLab/MITKats,fmilano/mitk