Not able to run simple example

[adrien3d]

Description

On macOS 14.4.1, I am able to run go run ./cmd/version/main.go, as well as the face detect example.
But not the following code:

Steps to Reproduce

package main

import (
	"image/color"

	"github.com/mattn/go-gtk/gtk"
	"gocv.io/x/gocv"
)

func main() {
	// Load face detection model
	classifier := gocv.NewCascadeClassifier()
	classifier.Load("haarcascade_frontalface_default.xml")
	defer classifier.Close()

	// Read input image
	img := gocv.IMRead("input.jpg", gocv.IMReadColor)
	defer img.Close()

	// Perform face detection
	rects := classifier.DetectMultiScale(img)

	// Draw bounding boxes around detected faces
	for _, r := range rects {
		gocv.Rectangle(img, r, color.RGBA{255, 0, 0, 0}, 3)
	}

	// Display the output
	window := gtk.NewWindow(gtk.WINDOW_TOPLEVEL)
	window.SetTitle("Face Detection")
	window.Connect("destroy", gtk.MainQuit)

	image := gtk.NewImageFromPixbuf(gocv.ToPixbuf(img))
	window.Add(image)

	window.SetDefaultSize(img.Cols(), img.Rows())
	window.ShowAll()

	gtk.Main()
}

Your Environment

export CGO_CXXFLAGS="--std=c++11"
export CGO_CPPFLAGS="-I/opt/homebrew/Cellar/opencv/4.9.0_7/include/opencv4"

• Operating System and version: macOS 14.4.1
• OpenCV version used: 4.9.0
• How did you install OpenCV? homebrew
• GoCV version used: 0.36.1
• Go version: 1.22.2
• Did you run the env.sh or env.cmd script before trying to go run or go build? Appears to be no longer necessary, so no

Error

# github.com/mattn/go-gtk/glib
In file included from _cgo_export.c:4:
In file included from glib.go:5:
../../../../pkg/mod/github.com/mattn/go-gtk@v0.0.0-20240119050609-48574e312fac/glib/glib.go.h:183:28: warning: 'GThreadFunctions' is deprecated [-Wdeprecated-declarations]
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/deprecated/gthread.h:57:51: note: 'GThreadFunctions' has been explicitly marked deprecated here
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/glib-visibility.h:145:38: note: expanded from macro 'GLIB_DEPRECATED_TYPE_IN_2_32'
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/gmacros.h:1324:30: note: expanded from macro 'GLIB_DEPRECATED_TYPE'
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/gmacros.h:1263:37: note: expanded from macro 'G_DEPRECATED'
# github.com/mattn/go-gtk/glib
In file included from ../../../../pkg/mod/github.com/mattn/go-gtk@v0.0.0-20240119050609-48574e312fac/glib/glib.go:5:
../../../../pkg/mod/github.com/mattn/go-gtk@v0.0.0-20240119050609-48574e312fac/glib/glib.go.h:183:28: warning: 'GThreadFunctions' is deprecated [-Wdeprecated-declarations]
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/deprecated/gthread.h:57:51: note: 'GThreadFunctions' has been explicitly marked deprecated here
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/glib-visibility.h:145:38: note: expanded from macro 'GLIB_DEPRECATED_TYPE_IN_2_32'
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/gmacros.h:1324:30: note: expanded from macro 'GLIB_DEPRECATED_TYPE'
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/gmacros.h:1263:37: note: expanded from macro 'G_DEPRECATED'
cgo-gcc-prolog:193:3: warning: 'GThreadFunctions' is deprecated [-Wdeprecated-declarations]
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/deprecated/gthread.h:57:51: note: 'GThreadFunctions' has been explicitly marked deprecated here
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/glib-visibility.h:145:38: note: expanded from macro 'GLIB_DEPRECATED_TYPE_IN_2_32'
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/gmacros.h:1324:30: note: expanded from macro 'GLIB_DEPRECATED_TYPE'
/opt/homebrew/Cellar/glib/2.80.0_2/include/glib-2.0/glib/gmacros.h:1263:37: note: expanded from macro 'G_DEPRECATED'
# github.com/mattn/go-gtk/gdk
# [pkg-config --cflags  -- gdk-2.0 gthread-2.0 gdk-2.0 gthread-2.0]
Package gdk-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gdk-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gdk-2.0' found
Package gdk-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gdk-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gdk-2.0' found

[deadprogram]

Hello @adrien3d first of all, looks like you have some problem with your GTK install. That is not related to GoCV at all.

Also, the function you reference gocv.ToPixbuf(img) does not exist in GoCV. Was that error from some generative system?