Qt中

Question

我是新來的Qt，和我一直在考慮這個任務Retreving Contry位置使用GPS ...

使用GPS檢測的國家 - 在一個文本框來顯示它。

那麼，因爲我是新來的，我不知道如何做這樣的事情。我開始通過搜索在互聯網上

我在這裏結束了：http://www.developer.nokia.com/Community/Wiki/File:Qt_for_Maemo_Location_Example.zip

所以我下載的代碼並運行它，噸錯誤的出現

..\liblocation\locationinfowidget.cpp:1:34: error: hildon/hildon-banner.h: No such file or directory 
In file included from ..\liblocation\locationinfowidget.cpp:5: 
..\liblocation\/locationinfowidget.h:18: error: 'LocationGPSDeviceFix' has not been declared 
..\liblocation\/locationinfowidget.h:20: error: 'LocationGPSDeviceStatus' has not been declared 
..\liblocation\/locationinfowidget.h:23: error: 'LocationGPSDevice' has not been declared 
..\liblocation\/locationinfowidget.h:23: error: 'gpointer' has not been declared 
..\liblocation\/locationinfowidget.h:24: error: 'LocationGPSDevice' has not been declared 
..\liblocation\/locationinfowidget.h:24: error: 'gpointer' has not been declared 
..\liblocation\/locationinfowidget.h:25: error: 'LocationGPSDevice' has not been declared 
..\liblocation\/locationinfowidget.h:25: error: 'gpointer' has not been declared 
..\liblocation\/locationinfowidget.h:33: error: ISO C++ forbids declaration of 'LocationGPSDevice' with no type 
..\liblocation\/locationinfowidget.h:33: error: expected ';' before '*' token 
..\liblocation\/locationinfowidget.h:34: error: ISO C++ forbids declaration of 'LocationGPSDControl' with no type 
..\liblocation\/locationinfowidget.h:34: error: expected ';' before '*' token 
..\liblocation\locationinfowidget.cpp: In constructor 'LocationInfoWidget::LocationInfoWidget(QWidget*)': 
..\liblocation\locationinfowidget.cpp:33: error: 'control' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:33: error: 'location_gpsd_control_get_default' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:35: error: 'location_gpsd_control_start' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:37: error: 'device' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:37: error: 'LocationGPSDevice' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:37: error: expected primary-expression before ')' token 
..\liblocation\locationinfowidget.cpp:37: error: expected ';' before 'g_object_new' 
..\liblocation\locationinfowidget.cpp:40: error: 'G_CALLBACK' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:40: error: 'g_signal_connect' was not declared in this scope 
..\liblocation\locationinfowidget.cpp: In destructor 'virtual LocationInfoWidget::~LocationInfoWidget()': 
..\liblocation\locationinfowidget.cpp:50: error: 'device' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:51: error: 'g_object_unref' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:53: error: 'control' was not declared in this scope 
..\liblocation\locationinfowidget.cpp:54: error: 'location_gpsd_control_stop' was not declared in this scope 
..\liblocation\locationinfowidget.cpp: At global scope: 
..\liblocation\locationinfowidget.cpp:57: error: variable or field 'updateStatus' declared void 
..\liblocation\locationinfowidget.cpp:57: error: 'LocationGPSDeviceStatus' was not declared in this scope 
mingw32-make[1]: *** [debug/locationinfowidget.o] Error 1 
mingw32-make: *** [debug] Error 2 

所以我在做這一切錯了嗎？有沒有更簡單的方法來做這樣的事情？請具體，我將不勝感激

Answer 1

那麼，第一個錯誤真的說明了一切：「hildon/hildon-banner.h：沒有這樣的文件或目錄」。

您至少缺少該文件。可能該文件聲明爲LocationGPSDeviceFix，這說明第二個錯誤「'LocationGPSDeviceFix'尚未聲明」。從那裏開始下坡。在C++中，你應該開始從上到下修復錯誤。

順便說一句，GPS只是告訴你的經度和latittude。你需要一個地圖將其翻譯成一個國家。電話網絡ID可能更容易;前三位數字是移動國家代碼（MCC）