我是新來的C + + GTK +的GUI編程,我有一個問題,讓我的一個按鈕的信號處理程序工作,在編譯和運行時,我收到以下警告。有誰知道我是否做錯了什麼或缺少什麼?(C++)Gtk-WARNING **:找不到信號處理程序'。你用-rdynamic編譯過嗎?
(Project Thoth:4359):Gtk-WARNING **:無法找到信號處理程序'on_login_clicked'。你用-rdynamic編譯過嗎?
這是我的cpp文件
#include <cstdlib>
#include <cstdio>
#include <string>
#include <gtk/gtk.h>
#include <iostream>
extern "C"
using namespace std;
int main(int argc, char *argv[])
{
GtkEntry *e1;//textbox1
GtkEntry *e2;//textbox2
GtkEntry *e3;//textbox3
GtkBuilder *gtkBuilder;
GtkWidget *window;
gtk_init(&argc, &argv);
gtkBuilder = gtk_builder_new();
gtk_builder_add_from_file(gtkBuilder, "Unsaved 1.glade", NULL);
window = GTK_WIDGET(gtk_builder_get_object(gtkBuilder, "Login"));
gtk_builder_connect_signals(gtkBuilder, window);
g_object_unref(G_OBJECT(gtkBuilder));
gtk_widget_show(window);
gtk_main();
cout << "Login window loaded";
return 0;
}
G_MODULE_EXPORT void on_login_clicked()
{
printf("Request Detected\n");
GtkBuilder *gtkBuilder;
GtkWidget *window;
gtkBuilder = gtk_builder_new();
gtk_builder_add_from_file(gtkBuilder, "Unsaved 1.glade", NULL);
GtkEntry *e1;
GtkEntry *e2;
e1 = GTK_ENTRY(gtk_builder_get_object(gtkBuilder, "user1"));
e2 = GTK_ENTRY(gtk_builder_get_object(gtkBuilder, "pass"));
gtk_builder_connect_signals(gtkBuilder, e1);
const char *home;
home = gtk_entry_get_text(e1);
cout << home;
}
和我的空地文件
<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.18.3 -->
<interface>
<requires lib="gtk+" version="3.0"/>
<object class="GtkApplicationWindow" id="Login">
<property name="can_focus">False</property>
<property name="window_position">center</property>
<property name="default_width">400</property>
<property name="default_height">300</property>
<signal name="destroy" handler="on_window_destroy" swapped="no"/>
<child>
<object class="GtkLayout" id="layout1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="Label">
<property name="width_request">100</property>
<property name="height_request">80</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Project Thoth
</property>
<property name="angle">0.089999999999999997</property>
<attributes>
<attribute name="weight" value="bold"/>
</attributes>
</object>
<packing>
<property name="x">156</property>
<property name="y">14</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="user1">
<property name="width_request">166</property>
<property name="height_request">80</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
</object>
<packing>
<property name="x">128</property>
<property name="y">72</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="label1">
<property name="width_request">100</property>
<property name="height_request">80</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Username:
</property>
</object>
<packing>
<property name="x">121</property>
<property name="y">52</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="pass">
<property name="width_request">166</property>
<property name="height_request">84</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
</object>
<packing>
<property name="x">129</property>
<property name="y">130</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="label3">
<property name="width_request">100</property>
<property name="height_request">80</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Password:
</property>
</object>
<packing>
<property name="x">117</property>
<property name="y">123</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button1">
<property name="label" translatable="yes">Login</property>
<property name="width_request">70</property>
<property name="height_request">29</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="relief">half</property>
<signal name="clicked" handler="on_login_clicked" swapped="no"/>
</object>
<packing>
<property name="x">171</property>
<property name="y">191</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="label2">
<property name="width_request">105</property>
<property name="height_request">35</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">save info login ?</property>
</object>
<packing>
<property name="x">154</property>
<property name="y">227</property>
</packing>
</child>
<child>
<object class="GtkSwitch" id="switch1">
<property name="width_request">74</property>
<property name="height_request">23</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
</object>
<packing>
<property name="x">166</property>
<property name="y">263</property>
</packing>
</child>
</object>
</child>
</object>
</interface>
還編制我用下面的標誌
g++ -o "Project Thoth" main.cpp $(pkg-config --cflags --libs gtk+-3.0 gmodule-2.0)
預先感謝任何幫助。
嘗試了不同的編譯代碼,它具有相同的結果。我試圖挽救Qt作爲最後的手段,但如果它更容易,我可以移動到gtkmm,如果它可以節省我的問題。 –
也許'-rdynamic'應該先給出,*之前*'-o Project_Thoth';順便說一句,如果你只用C編寫代碼(包括你的東西,所以'printf',不要''cout <<'),編譯時間會更快,因爲C++代碼編譯速度很慢。 –
是的,我可能只是用C只是因爲我知道那些作品。感謝您的幫助。 –