这些factor跟设置中的并无关系，而且都是整数，感觉象是放大镜的作用。
源码
#include <gtk/gtk.h> #include <gdk/gdk.h> #define FIRST_LABEL "first label" int main(int argc, char *argv[]) { gtk_init(NULL, NULL); GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_default_size(GTK_WINDOW(window), 300, 200); GtkWidget *vbox = gtk_vbox_new(TRUE, 10); gtk_container_add(GTK_CONTAINER(window), vbox); GtkWidget *label_one = gtk_label_new(FIRST_LABEL); gtk_container_add(GTK_CONTAINER(vbox), label_one); gtk_widget_show_all(window); int scale_factor = 0; scale_factor = gtk_widget_get_scale_factor (GTK_WIDGET (window)); printf("gtk_widget_get_scale_factor=%d\n", scale_factor); GdkDisplay* display = gdk_display_get_default(); printf("display=0x%08X\n", display); GdkScreen* screen = gdk_screen_get_default(); printf("screen=0x%08X\n", screen); scale_factor = gdk_screen_get_monitor_scale_factor(screen, 0); printf("gdk_screen_get_monitor_scale_factor=%d\n", scale_factor); GdkMonitor* monitor = gdk_display_get_primary_monitor(display); printf("monitor=0x%08X\n", monitor); scale_factor = gdk_monitor_get_scale_factor(monitor); printf("gdk_monitor_get_scale_factor=%d\n", scale_factor); gtk_main(); return 0; }
编译
#!/bin/bash COMPILE_INCLUDE=${COMPILE_INCLUDE}" -I/usr/include/gtk-3.0" OUTPUT_FILE=test if [ -f ${OUTPUT_FILE} ]; then rm ${OUTPUT_FILE} fi echo ${COMPILE_INCLUDE_LINK} gcc \ -o ${OUTPUT_FILE} \ test.c \ ${COMPILE_INCLUDE} \ ${COMPILE_LINK} \ `pkg-config --cflags --libs gtk+-3.0 gtk+-x11-3.0 gdk-3.0 gdk-x11-3.0`
