我希望了解如何在C++ Builder中将应用程序设置保存到xml或ini文件中的方法。我知道Visual Studio在“设置”中具有这些功能,我正在寻找相同的功能。
请问应该使用哪种方法来解决这个问题呢?
我希望了解如何在C++ Builder中将应用程序设置保存到xml或ini文件中的方法。我知道Visual Studio在“设置”中具有这些功能,我正在寻找相同的功能。
请问应该使用哪种方法来解决这个问题呢?
#include <IniFiles.hpp>
为了保存设置和值,请在OnClose事件中创建一个新的TIniFile并向其中写入。
void __fastcall TForm1::FormClose(TObject *Sender, TCloseAction &Action)
{
bool booleanValueToSave = true;
int integerValueToSave = 42;
TIniFile *ini = new TIniFile(ChangeFileExt(Application->ExeName, ".ini"));
ini->WriteString("SectionName", "KeyName", "Value to save as KeyName");
ini->WriteBool("SectionName", "AnotherKeyName", booleanValueToSave);
ini->WriteInteger("SectionName", "YetAnotherKeyName", integerValueToSave);
// To save something like the window size and position
ini->WriteInteger("Settings", "WindowState", Form1->WindowState);
if (Form1->WindowState == wsNormal)
{
ini->WriteInteger("Settings", "MainFrm Top", Form1->Top);
ini->WriteInteger("Settings", "MainFrm Left", Form1->Left);
ini->WriteInteger("Settings", "MainFrm Height", Form1->Height);
ini->WriteInteger("Settings", "MainFrm Width", Form1->Width);
}
delete ini;
}
别忘了删除!
那段代码将创建一个与您的可执行文件同名但扩展名为.ini的ini文件。它将有两个标题,"SectionName"和"Settings"。在标题下面,您将看到键值对,例如"AnotherKeyName=true"和"YetAnotherKeyName=42"。
然后,在应用程序启动时恢复值,创建一个新的TIniFile并在OnCreate事件中从中读取。
void __fastcall TForm1::FormCreate(TObject *Sender)
{
TWindowState ws;
int integerValueToRestore;
bool booleanValueToRestore;
int someDefaultIntegerValueIfTheKeyDoesntExist = 7;
bool someDefaultBooleanValueIfTheKeyDoesntExist = false;
TIniFile *ini = new TIniFile(ChangeFileExt(Application->ExeName, ".ini"));
integerValueToRestore = ini->ReadInteger("SectionName", "YetAnotherKeyName", someDefaultIntegerValueIfTheKeyDoesntExist);
booleanValueToRestore = ini->ReadBool("SectionName", "AnotherKeyName", someDefaultBooleanValueIfTheKeyDoesntExist);
// To restore the window size and position you saved on FormClose
ws = (TWindowState)ini->ReadInteger("Settings", "WindowState", wsNormal);
if (ws == wsMinimized)
ws = wsNormal;
if (ws == wsNormal)
{
Form1->Top = ini->ReadInteger("Settings", "MainFrm Top", 10);
Form1->Left = ini->ReadInteger("Settings", "MainFrm Left", 10);
Form1->Height = ini->ReadInteger("Settings", "MainFrm Height", 730);
Form1->Width = ini->ReadInteger("Settings", "MainFrm Width", 1028);
}
Form1->WindowState = ws;
delete ini;
}