Symbian 中各种提示、输入对话框的使用

核心提示：};}};}此类对话框可以有声音提示，由NewL的const TTone& aTone参数指定，Symbian 中各种提示、输入对话框的使用(4)，可能的值如下：Code:enum TTone {/// No tone is playedENoTone = 0,/// A confirmation tone is pl

};

}

};

}

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;

};

};

}

};

}

使用方法：

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