对话框的练习

写一对话框的 rss 资源

RESOURCE DIALOG r_my_dlg
    {
        flags = EEikDialogFlagNoDrag | EEikDialogFlagNoTitleBar |
        EEikDialogFlagFillAppClientRect|EEikDialogFlagCbaButtons |EEikDialogFlagWait
        |EEikDialogFlagNotifyEsc;
        buttons = r_my_dia_button;
        items={
                DLG_LINE
                    {
                        id = ESimpleDlgCtlLabel;
                        type = EEikCtLabel;
                        control = LABEL{
                        txt = "this is a simple dialog";
                        };
                    },
                DLG_LINE
                    {
                        id = 10;
                        type = EEikCtEdwin;
                        control = EDWIN
                            {
                                width=10;
                                lines =1 ;
                                maxlength = 10;
                            };

                    }
        };
    }

RESOURCE CBA r_my_dia_button
    {
        buttons = {
                CBA_BUTTON{
                    id = 6;
                    txt = "ok";
                },
                CBA_BUTTON
                    {
                    id = 7;
                    txt = "close";
                    }
        };
    }

调用代码

CAknDialog* dl = new(ELeave)CMyDialog;

/* dl->PrepareLC(R_MY_DLG);

CEikLabel* label = static_cast<CEikLabel*>(dl->Control(ESimpleDlgCtlLabel));

label->SetTextL(_L("hello"));

if (dl->RunLD())

if (dl->ExecuteLD(R_MY_DLG))

{

iEikonEnv->InfoMsg(_L("Button ok"));

}

else

{

iEikonEnv->InfoMsg(_L("Button cancel"));

}

这里用到自定义对话框了，自定义对话框从 CAknDialog 继承过来，代码如下

class CMySimpleDialog : public CAknDialog

{

protected: // Functions from base classes

void PreLayoutDynInitL();

void PostLayoutDynInitL();

TBool OkToExitL(TInt aButtonId);

};

#include "CMyDialog.h"

#include <eiklabel.h>

#include "Dlgtest.hrh"

#include <akndialog.h>

#include <eikenv.h>

CMyDialog::CMyDialog()

{

// TODO Auto-generated constructor stub

}

void CMyDialog::PreLayoutDynInitL()

{

CEikLabel* label = static_cast<CEikLabel*>(Control(ESimpleDlgCtlLabel));

label->SetTextL(_L("aaa"));

}

void CMyDialog::PostLayoutDynInitL()

{

}

TBool CMyDialog::OkToExitL(TInt aButtonId)

{

TBool ret = CAknDialog::OkToExitL(aButtonId);

CEikonEnv* env = CEikonEnv::Static();

if (aButtonId == 6)

{

env->InfoMsg(_L("ok to exit"));

}

else

{

env->InfoMsg(_L("cancel to exit"));

ret = EFalse;

}

return ret;

}

CMyDialog::~CMyDialog()

{

// TODO Auto-generated destructor stub

}

如果是自定义的对话框同时继承了 OkToExit 方法，可以通过改写这个方法的返回值来决定是不是需要关闭这个对话框，

返回 ETrue 则关闭对话框，否则继续显示对话框，注意对于等待的对话框来说，代码会停在那里，非等待的对话框来说，

代码继续执行，但对话框不消失