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namedWindow bug on Ubuntu 16.04

Hi,

I have just installed OpenCV from GitHub on Ubuntu 16.04 (Unity 7) and tried this basic program:

int main(int argc, char *argv[]) {
    cv::Mat src { cv::imread(argv[1], CV_LOAD_IMAGE_COLOR) };
    if( src.empty() ){
        std::cerr << "Error loading image: no data found" << std::endl;
        std::exit(EXIT_FAILURE);
    }
    cv::namedWindow("Example 1", CV_WINDOW_AUTOSIZE);
    cv::imshow("Example 1", src);
 
cv::waitKey(0);
cv::destroyWindow("Example 1");
}

 
 
When I run the program, the window is "locked" on the upper left corner. I'm unable to grab it or do anything with it. There isn't even a close button.
Sometime, I also get the toolbar with the zoom/save/... options. I get a similar result with CV_WINDOW_FULLSCREEN (the window is actually not in full screen mode). The other parameters are fine.
 
I haven't found any report of this behavior but I suppose this is a bug. Has anyone encounter this issue too?
 
I can't post a screenshot because I'm new and my karma is too low for this... : (   Sorry...

namedWindow bug on Ubuntu 16.04

Hi,

I have just installed OpenCV from GitHub on Ubuntu 16.04 (Unity 7) and tried this basic program:

int main(int argc, char *argv[]) *argv[])
{
    if( argc != 2 ) {
        std::cerr << "Expecting 1 argument: /path/to/img" << std::endl;
        std::exit(EXIT_FAILURE);
    }


cv::Mat src { cv::imread(argv[1], CV_LOAD_IMAGE_COLOR) };
 if( src.empty() ){
     std::cerr << "Error loading image: no data found" << std::endl;
     std::exit(EXIT_FAILURE);
 }
  cv::namedWindow("Example 1", CV_WINDOW_AUTOSIZE);
 cv::imshow("Example 1", src);
 
src);

cv::waitKey(0);
cv::destroyWindow("Example 1");
}

 
}
 
When I run the program, the window is "locked" on the upper left corner. I'm unable to grab it or do anything with it. There isn't even a close button.
Sometime, I also get the toolbar with the zoom/save/... options. I get a similar result with CV_WINDOW_FULLSCREEN (the window is actually not in full screen mode). The other parameters are fine.
 
I haven't found any report of this behavior but I suppose this is a bug. Has anyone encounter this issue too?
 
I can't post a screenshot because I'm new and my karma is too low for this... : ( Sorry...
  
EDIT: something went wrong with my post layout but I'm unable to fix it. Sorry again.

namedWindow bug on Ubuntu 16.04

Hi,

I have just installed OpenCV from GitHub on Ubuntu 16.04 (Unity 7) and tried this basic program:

int main(int argc, char *argv[])
{
    if( argc != 2 ) {
        std::cerr << "Expecting 1 argument: /path/to/img" << std::endl;
        std::exit(EXIT_FAILURE);
    }


cv::Mat src { cv::imread(argv[1], CV_LOAD_IMAGE_COLOR) };
if( src.empty() ){
    std::cerr << "Error loading image: no data found" << std::endl;
    std::exit(EXIT_FAILURE);
}

cv::namedWindow("Example 1", CV_WINDOW_AUTOSIZE);
cv::imshow("Example 1", src);

cv::waitKey(0);
cv::destroyWindow("Example 1");

 
}
 
When I run the program, the window is "locked" on the upper left corner. I'm unable to grab it or do anything with it. There isn't even a close button.
Sometime, I also get the toolbar with the zoom/save/... options. I get a similar result with CV_WINDOW_FULLSCREEN (the window is actually not in full screen mode). The other parameters are fine.
 
I haven't found any report of this behavior but I suppose this is a bug. Has anyone encounter this issue too?
 
I can't post a screenshot because I'm new and my karma is too low for this... : (   Sorry...
 
EDIT: something went wrong with my post layout but I'm unable to fix it. Sorry again.
  
EDIT: here is the cmake output
 
 
-- Detected version of GNU GCC: 54 (504)
-- FP16: Feature disabled
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found suitable version "1.2.8", minimum required is "1.2.3") 
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.8") 
-- Checking for module 'gstreamer-base-1.0'
--   No package 'gstreamer-base-1.0' found
-- Checking for module 'gstreamer-video-1.0'
--   No package 'gstreamer-video-1.0' found
-- Checking for module 'gstreamer-app-1.0'
--   No package 'gstreamer-app-1.0' found
-- Checking for module 'gstreamer-riff-1.0'
--   No package 'gstreamer-riff-1.0' found
-- Checking for module 'gstreamer-pbutils-1.0'
--   No package 'gstreamer-pbutils-1.0' found
-- Checking for module 'gstreamer-base-0.10'
--   No package 'gstreamer-base-0.10' found
-- Checking for module 'gstreamer-video-0.10'
--   No package 'gstreamer-video-0.10' found
-- Checking for module 'gstreamer-app-0.10'
--   No package 'gstreamer-app-0.10' found
-- Checking for module 'gstreamer-riff-0.10'
--   No package 'gstreamer-riff-0.10' found
-- Checking for module 'gstreamer-pbutils-0.10'
--   No package 'gstreamer-pbutils-0.10' found
-- Checking for module 'libdc1394-2'
--   No package 'libdc1394-2' found
-- Checking for module 'libdc1394'
--   No package 'libdc1394' found
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - not found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- Checking for module 'libavresample'
--   No package 'libavresample' found
-- Checking for module 'libgphoto2'
--   No package 'libgphoto2' found
-- found IPP (ICV version): 9.0.1 [9.0.1]
-- at: /home/simon/opencv/release/3rdparty/ippicv/ippicv_lnx
-- Could not find OpenBLAS include. Turning OpenBLAS_FOUND off
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing:  Atlas_CBLAS_INCLUDE_DIR Atlas_CLAPACK_INCLUDE_DIR Atlas_CBLAS_LIBRARY Atlas_BLAS_LIBRARY Atlas_LAPACK_LIBRARY) 
-- A library with BLAS API not found. Please specify library location.
-- LAPACK requires BLAS
-- A library with LAPACK API not found. Please specify library location.
-- Could NOT find JNI (missing:  JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH) 
 
-- VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
 
-- General configuration for OpenCV 3.2.0-dev =====================================
 
--   Version control:               3.2.0-148-g976ee44
 
--   Platform:
--     Timestamp:                   2017-02-08T16:11:54Z
--     Host:                        Linux 4.4.0-62-generic x86_64
--     CMake:                       3.5.1
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
 
--     Configuration:               RELEASE
 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ Compiler:                /usr/bin/c++  (ver 5.4.0)
--     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/cc
--     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):
--     Linker flags (Debug):
--     ccache:                      NO
--     Precompiled headers:         YES
--     Extra dependencies:          Qt5::Core Qt5::Gui Qt5::Widgets Qt5::Test Qt5::Concurrent /usr/lib/x86_64-linux-gnu/libpng.so /usr/lib/x86_64-linux-gnu/libz.so /usr/lib/x86_64-linux-gnu/libtiff.so /usr/lib/x86_64-linux-gnu/libjasper.so /usr/lib/x86_64-linux-gnu/libjpeg.so avcodec-ffmpeg avformat-ffmpeg avutil-ffmpeg swscale-ffmpeg dl m pthread rt
 
--     3rdparty dependencies:       libwebp IlmImf
 
--   OpenCV modules:
--     To be built:                 core flann imgproc ml photo video imgcodecs shape videoio highgui objdetect superres ts features2d calib3d stitching videostab
--     Disabled:                    world
--     Disabled by dependency:      -
 
--     Unavailable:                 cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python2 python3 viz
 
--   GUI: 
--     QT 5.x:                      YES (ver 5.5.1)
--     QT OpenGL support:           NO
--     OpenGL support:              NO
 
--     VTK support:                 NO
 
--   Media I/O: 
--     ZLib:                        /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.8)
--     JPEG:                        /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
--     WEBP:                        build (ver 0.3.1)
--     PNG:                         /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.20)
--     TIFF:                        /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 4.0.6)
--     JPEG 2000:                   /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1)
--     OpenEXR:                     build (ver 1.7.1)
--     GDAL:                        NO
 
--     GDCM:                        NO
 
--   Video I/O:
--     DC1394 1.x:                  NO
--     DC1394 2.x:                  NO
--     FFMPEG:                      YES
--       avcodec:                   YES (ver 56.60.100)
--       avformat:                  YES (ver 56.40.101)
--       avutil:                    YES (ver 54.31.100)
--       swscale:                   YES (ver 3.1.101)
--       avresample:                NO
--     GStreamer:                   NO
--     OpenNI:                      NO
--     OpenNI PrimeSensor Modules:  NO
--     OpenNI2:                     NO
--     PvAPI:                       NO
--     GigEVisionSDK:               NO
--     Aravis SDK:                  NO
--     UniCap:                      NO
--     UniCap ucil:                 NO
--     V4L/V4L2:                    NO/YES
--     XIMEA:                       NO
--     Xine:                        NO
 
--     gPhoto2:                     NO
 
--   Parallel framework:            pthreads
 
--   Other third-party libraries:
--     Use IPP:                     9.0.1 [9.0.1]
--          at:                     /home/simon/opencv/release/3rdparty/ippicv/ippicv_lnx
--     Use IPP Async:               NO
--     Use VA:                      NO
--     Use Intel VA-API/OpenCL:     NO
--     Use Lapack:                  NO
--     Use Eigen:                   NO
--     Use Cuda:                    NO
--     Use OpenCL:                  YES
--     Use OpenVX:                  NO
 
--     Use custom HAL:              NO
 
--   OpenCL:                        <dynamic loading="" of="" opencl="" library="">
--     Include path:                /home/simon/opencv/3rdparty/include/opencl/1.2
--     Use AMDFFT:                  NO
 
--     Use AMDBLAS:                 NO
 
--   Python 2:
 
--     Interpreter:                 /usr/bin/python2.7 (ver 2.7.12)
 
--   Python 3:
 
--     Interpreter:                 /usr/bin/python3 (ver 3.5.2)
 
--   Python (for build):            /usr/bin/python2.7
 
--   Java:
--     ant:                         NO
--     JNI:                         NO
--     Java wrappers:               NO
 
--     Java tests:                  NO
 
--   Matlab:
--     mex:                         /usr/local/MATLAB/R2016b/bin/mex
 
--     Compiler/generator:          Not working (bindings will not be generated)
 
--   Documentation:
 
--     Doxygen:                     /usr/bin/doxygen (ver 1.8.11)
 
--   Tests and samples:
--     Tests:                       YES
--     Performance tests:           YES
 
--     C/C++ Examples:              NO
 
--   Install path:                  /usr/local
 
--   cvconfig.h is in:              /home/simon/opencv/release
 
-- -----------------------------------------------------------------
 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/simon/opencv/release
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