Use the tabs on the upper right to switch to a different programming language.

Use the tabs on the upper right to switch to a different programming language.

Use the tabs on the upper right to switch to a different programming language.

dev_displaydev_displayDevDisplayDevDisplay (Operator)


dev_displaydev_displayDevDisplayDevDisplay — Displays image objects in the current graphics window.


dev_display(Object : : : )

Herror dev_display(const Hobject Object)

Herror T_dev_display(const Hobject Object)

void DevDisplay(const HObject& Object)

static void HWindow::DevDisplay(const HObject& Object)

static void HOperatorSet.DevDisplay(HObject objectVal)

static void HWindow.DevDisplay(HObject objectVal)


dev_displaydev_displayDevDisplayDevDisplayDevDisplay displays an iconic object (image, region, or XLD) in the active graphics window. This is equivalent to a double click on an icon variable inside the variable window.


Using the code export feature of HDevelop, the code that is generated for this operator may have a different behavior than the related HALCON operator. For a detailed description of the code export of HDevelop graphics operators into the different programming languages see in the “HDevelop User's Guide” the chapter Code Export -> General Aspects of Code Generation -> Graphics Windows.


ObjectObjectObjectObjectobjectVal (input_object)  object(-array) objectHObjectHObjectHobject

Image objects to be displayed.

Example (HDevelop)

read_image (Image, 'fabrik')
regiongrowing (Image, Regions, 3, 3, 6, 100)
dev_clear_window ()
dev_display (Image)
dev_set_colored (12)
dev_set_draw ('margin')
dev_display (Regions)


If the values of the specified parameters are correct, dev_displaydev_displayDevDisplayDevDisplayDevDisplay returns 2 (H_MSG_TRUE). Otherwise an exception is raised and an error code returned.


disp_objdisp_objDispObjDispObjDispObj, disp_imagedisp_imageDispImageDispImageDispImage, disp_regiondisp_regionDispRegionDispRegionDispRegion, disp_xlddisp_xldDispXldDispXldDispXld

See also

dev_set_colordev_set_colorDevSetColorDevSetColorDevSetColor, dev_set_coloreddev_set_coloredDevSetColoredDevSetColoredDevSetColored, dev_set_drawdev_set_drawDevSetDrawDevSetDrawDevSetDraw, dev_set_line_widthdev_set_line_widthDevSetLineWidthDevSetLineWidthDevSetLineWidth