Symbian 中各种提示、输入对话框的使用

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Symbian UI Blog

1、非阻塞提示框

symbian定义了几个提示类，分别是：
confirm类：CAknConfirmationNote
info类： CAknInformationNote
warning类：CAknWarningNote
error类：CAknErrorNote

头文件：aknnotewrappers.h
lib： avkon.lib eikcdlg.lib eikctl.lib

Code：
TBuf<32> buf;
buf.Copy(_L("info note"));
CAknInformationNote* iInfoNote = new (ELeave) CAknInformationNote;
iInfoNote->ExecuteLD(buf);

2、阻塞提示框

void CEikonEnv::AlertWin(const TDesC& aMsg);
void CEikonEnv::AlertWin(const TDesC& aMsg1,const TDesC& aMsg2);
static void CEikonEnv::InfoWinL(const TDesC& aFirstLine,const TDesC& aSecondLine);

AlertWin为CEikonEnv类的非静态成员函数，InfoWinL为CEikonEnv类的静态成员函数。
AlertWin只能在ui、view和container中使用，使用方法如下：

Code:
iEikonEnv->AlertWin(_L("text"));

InfoWinL可以在任意类中使用，使用方法如下：
Code:
CEikonEnv::Static()->InfoWinL(_L("note:"), _L("text"));

为方便使用，常定义宏来使用这类提示框，如：

Code:
#define DEBUG_DIALOG(x) iEikonEnv->AlertWin(##x);
#define DEBUG_DIALOG1(x) CEikonEnv::Static()->InfoWinL(_L("note:"), ##x);
#define DEBUG_DIALOG2(x,y) CEikonEnv::Static()->InfoWinL(##x, ##y);

可以这么使用：
TBuf<32> buf;
buf.Copy(_L("test"));
DEBUG_DIALOG(buf);
DEBUG_DIALOG1(buf);
DEBUG_DIALOG2(buf,_L("text"));

此类提示框阻塞线程，只有用户按键退出提示框后，后面的程序才能接着运行。

3、进度条对话框

进度条对话框类为：
CAknProgressDialog
头文件：aknprogressdialog.h
lib：avkon.lib eikcdlg.lib eikctl.lib

Code:

//初始化进度条
CAknProgressDialog* iProgressDialog;
CEikProgressInfo* iProgressInfo;
iProgressDialog = new ( ELeave ) CAknProgressDialog( reinterpret_cast
<CEikDialog**>
( &iProgressDialog ) );
iProgressDialog->SetCallback( this );
iProgressDialog->PrepareLC( R_RESOURCE_PROGRESS_NOTE ); //从资源文件构造对话框，资源见下面的定义
iProgressInfo = iProgressDialog->GetProgressInfoL();
iProgressInfo->SetFinalValue( aMaxValue ); //设置进度条的最大值（结束值）
iProgressDialog->RunLD();

//更新进度条
iProgressInfo->IncrementAndDraw( aStep );

//结束进度条
iProgressDialog->ProcessFinishedL();
delete iProgressDialog;

RESOURCE DIALOG R_RESOURCE_PROGRESS_NOTE //进度条对话框资源
{
flags = EAknProgressNoteFlags;
buttons = R_AVKON_SOFTKEYS_CANCEL;
items =
{
DLG_LINE
{
type = EAknCtNote;
id = EMagicBoxCtrlIdProgressNote;
control = AVKON_NOTE
{
layout = EProgressLayout;
singular_label = "对话框中显示的文字";
plural_label = "download";
imagefile = AVKON_BMPFILE_NAME; //第二版中图标文件为 #define AVKON_BMPFILE_NAME "z:\\system\\data\\avkon.mbm"
imageid = EMbmAvkonQgn_note_sml; //这两项可更改显示不同图标
imagemask = EMbmAvkonQgn_note_sml_mask;
};
}
};
}

注意：In Series 60 3rd edition, avkon.mbm was replaced by avkon2.mbm and moved to a different location (and the SDK forgot to mention this and still provides erroneous location).
Old entry:
imagefile = "z:\\system\data\avkon.mbm";
New entry:
imagefile = "z:\\resource\apps\avkon2.mbm";

4、等待对话框

等待对话框要用到的类：CAknGlobalNote
头文件：aknglobalnote.h
lib：aknnotify.lib eiksrv.lib

Code:

//显示等待对话框
CAknGlobalNote* globalNote = CAknGlobalNote::NewL();
CleanupStack::PushL( globalNote );
TInt iWaitNoteId = globalNote->ShowNoteL( EAknGlobalWaitNote, _L("对话框中显示的文字") );
CleanupStack::PopAndDestroy();

//结束等待对话框
CAknGlobalNote * note = CAknGlobalNote::NewL();
CleanupStack::PushL( note );
note->CancelNoteL( iWaitNoteId );
CleanupStack::PopAndDestroy();

注意：
CAknGlobalNote类除了显示等待对话框外还可显示多种类型的全局对话框，具体类型可通过ShowNoteL的第一个参数指定，可能的类型如下：

Code:

enum TAknGlobalNoteType
{
EAknGlobalInformationNote = 1,
EAknGlobalWarningNote,
EAknGlobalConfirmationNote,
EAknGlobalErrorNote,
EAknGlobalChargingNote,
EAknGlobalWaitNote,
EAknGlobalPermanentNote,
EAknGlobalNotChargingNote,
EAknGlobalBatteryFullNote,
EAknGlobalBatteryLowNote,
EAknGlobalRechargeBatteryNote,
EAknCancelGlobalNote,
EAknGlobalTextNote
};

5、询问对话框

询问对话框用到的类：CAknQueryDialog
头文件：AknQueryDialog.h
lib：avkon.lib

Code:

CAknQueryDialog* dlg;
dlg = CAknQueryDialog::NewL( CAknQueryDialog::ENoTone );
dlg->PrepareLC( R_RESOURCE_QUERY_DIALOG ); //从资源文件构造对话框，资源见下面的定义
TInt ret = dlg->RunLD(); //若用户选择“是”，返回非0，选择“否”，则返回0

RESOURCE DIALOG R_RESOURCE_QUERY_DIALOG //询问对话框资源
{
flags = EGeneralQueryFlags;
buttons = R_AVKON_SOFTKEYS_YES_NO; //CBA显示“是”和“否”两个按钮
items =
{
DLG_LINE
{
type = EAknCtQuery;
id = EGeneralQuery;
control = AVKON_CONFIRMATION_QUERY //表示这是confirm询问对话框，用户选择“是”或“否”
{
layout = EConfirmationQueryLayout;
label = "对话框中显示的文字";
};
}
};
}

此类对话框可以有声音提示，由NewL的const TTone& aTone参数指定，可能的值如下：

Code:

enum TTone {
/// No tone is played
ENoTone = 0,
/// A confirmation tone is played
EConfirmationTone = EAvkonSIDConfirmationTone,
/// A warning tone is played
EWarningTone = EAvkonSIDWarningTone,
/// An error tone is played
EErrorTone = EAvkonSIDErrorTone
};

通过定义不同的询问对话框资源，可实现不同的询问对话框，如让用户输入文字的询问对话框资源定义如下：

Code:

RESOURCE DIALOG R_RESOURCE_DATA_QUERY
{
flags = EGeneralQueryFlags;
buttons = R_AVKON_SOFTKEYS_OK_CANCEL; //CBA按钮显示“确定”和“取消”
items =
{
DLG_LINE
{
type = EAknCtQuery;
id = EGeneralQuery;
control = AVKON_DATA_QUERY //表示这是data询问对话框，需要用户输入内容
{
layout = EDataLayout;
label = "提示内容";
control = EDWIN
{
flags = EEikEdwinNoHorizScrolling | EEikEdwinResizable;
width = 30;
lines = 2;
maxlength = 159;
};
};
}
};
}

Code:

TBuf<128> msg;
CAknTextQueryDialog* dlg = new (ELeave) CAknTextQueryDialog(msg,CAknQueryDialog::ENoTone);
TInt ret = dlg->ExecuteLD(R_RESOURCE_DATA_QUERY);

用户输入内容后按“确定”，内容就存储到msg中，函数返回非0；按“取消”，函数返回0。

这里用到的类是CAknQueryDialog的子类CAknTextQueryDialog。
CAknQueryDialog的子类有：

Code:

CAknFloatingPointQueryDialog //This class should be used when user is reguest to enter a flotaing point number
CAknFixedPointQueryDialog //...
CAknDurationQueryDialog //This class should be used when user is reguest to enter duration
CAknIpAddressQueryDialog //This class should be used when user is reguest to enter IP address,@since 2.1
CAknMultiLineDataQueryDialog //Query Dialog with data input on more than one line (2 lines at the moment)
Create using NewL methods and passing parameters as appropriate.
Attention: When deriving from this class, you must call SetDataL during
second phase construction.
CAknMultiLineIpQueryDialog //...
CAknNumberQueryDialog //This class should be used when user is reguest to enter number
CAknTextQueryDialog //This class should be used when user is reguest to enter plain text, secret text, phonenumber or PIN-code
CAknTimeQueryDialog //This class should be used when user is reguest to enter time or date

使用不同的类，资源文件会有所不同。

另外，在资源中定义EDWIN时，可指定输入发，如：

Code:

control = EDWIN
{
flags = EEikEdwinNoHorizScrolling | EEikEdwinResizable;
width = 11;
lines = 1;
maxlength = 11;
avkon_flags = EAknEditorFlagFixedCase |
EAknEditorFlagNoT9 | EAknEditorFlagSupressShiftMenu; //EAknEditorFlagSupressShiftMenu屏蔽切换输入法键
allowed_input_modes = EAknEditorNumericInputMode;
default_input_mode = EAknEditorNumericInputMode;
numeric_keymap = EAknEditorPlainNumberModeKeymap;
};

以上写法表示默认输入法为数字，并且屏蔽了输入法切换键，即不能通过输入法切换键来切换输入法。

6、编辑框

编辑框使用的类：CEikGlobalTextEditor
头文件：eikgted.h

Code:

CEikGlobalTextEditor* iGKeyEd;
TBuf<128> iKeyText;
TResourceReader reader;
iCoeEnv->CreateResourceReaderLC( reader, R_RESOURCE_EDITOR ); //从资源文件构造编辑框，资源见下面的定义
iGKeyEd = new ( ELeave ) CEikGlobalTextEditor;
iGKeyEd->SetContainerWindowL( *this );
iGKeyEd->ConstructFromResourceL( reader );
CleanupStack::PopAndDestroy(); // Resource reader

//设置编辑框的初始文本和位置，编辑框大小在资源中定义
TBuf<32> buf;
buf.Copy(_L("demo"));
iGKeyEd->SetTextL(&buf);
iGKeyEd->SetExtent( TPoint(5,2), iGKeyEd->MinimumSize() );
iGKeyEd->SetFocus(ETrue);
// iGKeyEd->SetReadOnly(ETrue); //设置编辑框为只读

//使文字居中
CParaFormat paraFormat;
TParaFormatMask paraFormatMask;
paraFormatMask.SetAttrib( EAttAlignment ); // set mask
paraFormat.iHorizontalAlignment = CParaFormat::ECenterAlign;
iGKeyEd->ApplyParaFormatL( &paraFormat, paraFormatMask );

iGKeyEd->GetText(iKeyText); //获取编辑框中的内容，保存到iKeyText中

RESOURCE GTXTED R_RESOURCE_EDITOR //编辑框资源
{
flags = EAknEditorFlagDefault;
width = 53;
height = 16;
numlines = 1;
textlimit= 1;
fontcontrolflags = EGulFontControlAll;
fontnameflags = EGulNoSymbolFonts;

//这里也可设置输入法
// avkon_flags = EAknEditorFlagFixedCase |
EAknEditorFlagNoT9 | EAknEditorFlagSupressShiftMenu; //EAknEditorFlagSupressShiftMenu屏蔽切换输入法键
// allowed_input_modes = EAknEditorNumericInputMode;
// default_input_mode = EAknEditorNumericInputMode;
// numeric_keymap = EAknEditorPlainNumberModeKeymap;
}

注意，要使编辑框正常显示，记得更改container的CountComponentControls 和ComponentControl函数，正确处理控件数目和编辑框指针。另外，要使编辑框能正常接收按键事件，要显示调用编辑框的 OfferKeyEventL函数，如下：

Code:

TKeyResponse CMobileGuardSetKeyContainer::OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType )
{
return iGKeyEd->OfferKeyEventL( aKeyEvent, aType );
}

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/primer_programer/archive/2009/07/14/4347902.aspx

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