问题描述
如何获取GtkImage小部件中使用的图像的文件名?
How can I get the file name of the image used in a GtkImage widget?
我有一个显示不同图像的GtkImage小部件.我希望能够单击GtkImage，确定已单击了哪个图像，即获取文件名，然后显示较大的版本.
I have a GtkImage widget that displays different images. I want to be able to click on the GtkImage, determine which image has been clicked i.e. get the file name, then display a larger version.
谢谢
推荐答案
您可以获取 g_object_get_property .这些行中的内容:
You can get the value of "file" property of GtkImage using g_object_get_property. Something on these lines:
GValue value = {0,};
/* If you have glib version 2.30 or higher use:
* GValue value = G_VALUE_INIT;
*/
g_value_init (&value, G_TYPE_STRING);
/* Assuming image is a valid GtkImage */
g_object_get_property(G_OBJECT(image), "file", &value);
printf("\n Filename = %s\n", g_value_get_string(&value));
旁注:要利用 Glib 的类型系统，应调用 g_type_init().由于通过 gtk_init 进行Gtk初始化，内部调用了 g_type_init().
Side note: To make use of the Glib's type system, g_type_init() should have been called. g_type_init() is called internally as a consequence of Gtk initialization through gtk_init.
希望这会有所帮助！
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