Signal
GtkPrintOperation::preview
Declaration
gboolean
preview (
GtkPrintOperation self,
GtkPrintOperationPreview* preview,
GtkPrintContext* context,
GtkWindow* parent,
gpointer user_data
)
Description [src]
Gets emitted when a preview is requested from the native dialog.
The default handler for this signal uses an external viewer application to preview.
To implement a custom print preview, an application must return
TRUE
from its handler for this signal. In order to use the
provided context
for the preview implementation, it must be
given a suitable cairo context with
gtk_print_context_set_cairo_context().
The custom preview implementation can use gtk_print_operation_preview_is_selected() and gtk_print_operation_preview_render_page() to find pages which are selected for print and render them. The preview must be finished by calling gtk_print_operation_preview_end_preview() (typically in response to the user clicking a close button).
Default handler: | The default handler is called after the handlers added via |
Parameters
preview |
GtkPrintOperationPreview |
The |
|
The data is owned by the caller of the function. | |
context |
GtkPrintContext |
The |
|
The data is owned by the caller of the function. | |
parent |
GtkWindow |
The |
|
The argument can be NULL . | |
The data is owned by the caller of the function. |