linux+QT5+openCV ：出现GLib-GObject-WARNING，GLib-GObject-CRITICAL 错误

项目场景：

提示：这里简述项目相关背景：

树莓派/linux QT5 使用openCV库 生成应用程序是 出现GLib-GObject-WARNING，以及GLib-GObject-CRITICAL 错误。。。。折腾了一晚上心累

问题描述

提示：这里描述项目中遇到的问题：

(test1:3364): GLib-GObject-WARNING **: 23:57:44.713: cannot register existing type ‘GtkWidget’

(test1:3364): GLib-GObject-CRITICAL **: 23:57:44.713: g_type_add_interface_static: assertion ‘G_TYPE_IS_INSTANTIATABLE (instance_type)’ failed

(test1:3364): GLib-GObject-WARNING **: 23:57:44.714: cannot register existing type ‘GtkBuildable’

(test1:3364): GLib-GObject-CRITICAL **: 23:57:44.714: g_type_interface_add_prerequisite: assertion ‘G_TYPE_IS_INTERFACE (interface_type)’ failed

(test1:3364): GLib-CRITICAL **: 23:57:44.714: g_once_init_leave: assertion ‘result != 0’ failed

(test1:3364): GLib-GObject-CRITICAL **: 23:57:44.714: g_type_add_interface_static: assertion ‘G_TYPE_IS_INSTANTIATABLE (instance_type)’ failed

(test1:3364): GLib-GObject-CRITICAL **: 23:57:44.714: g_type_register_static: assertion ‘parent_type > 0’ failed

原因分析：

QT5的运行环境qt5ct 和 openCV的gtk 发生冲突

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解决方案：

提示：这里填写该问题的具体解决方案：

• 运行环境修改如图所示

1.点击项目
2.点击RUN
3.找到 RUN ENVIRONMENT
4.找到 QT_QPA_PLATFORMTHEME 修改成 gtk3