... /-kw=747=CD23MY3CD+!=kG*<<M:\7`7C-[=<QCCD=CH@GHI@=E3@-CD=74*R71C<Q,-:VI•,4GH-*[=_MY3+SHMH75QCCD5\6+H0T-CD5\6+8MK-Y=MU`*R[=|g:/7GHH0H@<A56MIVN`C-N/2:;5Cg:/*[MuI†23HN=IV*F<x=,-@VNDJ*Bài 14. Tìm hiểu và sử dụng Qt để viết chương trình tạo một cửa sổ chương trình điển hình. ... NOTEPAD_ HSB&,H+!=kGVNCDY=MU23`*SB}5rx=,NHN=7=CHMN=H„@5<,-=CHMN=HO,N„)47=cd,H*:;,*SB$#2=C=7+…ˆK‰T*<0V5975rx=,N@-:\,N^==CD+ˆ:qH*@<PN/I%c=c+ˆ:qH*!D+ˆ:qH<CCDM\I/gMCD,NooO*[~,-@,N-M,<Q567V47jCH*P<Q7V,4=CM\^=CDM,-?<*SB$Š5rx=CDM77<CD=CM\Ce5r56?,-N=7H*7r#b7=7;GHIE<N=7HF<,-CDGHVN=VJ*SB$}5rx=CDHM77/5Q/N<:D5_56MY3:Z5\67B5L^=<*H]5e^=oo@-C^<,NC-<56I=:@:y59:;CDV_F‹J*7+ˆ:qH@-C^/,-5Q5/C:/7;-C^^=,N0V56?5[ICD5\6560<=E]=CD7†5%,NMZ*SB$'I=:CD:%-,-CD7†5%,NHN=„)*!D:%-yCD,N3Q@-<Q%NAV/N2^=<*C)+/,123+4-0/56/7Hd,HC-Gw=747=,NHN=M=#include " ;notepad. h"#include "ui _notepad. h" Notepad: :Notepad( QWidget *parent) : QMainWindow(parent), ui(new Ui: :Notepad) { ui->setupUi(this);} Notepad: : ~Notepad( ){ ... name="actionSave"/>7=C:Q6-5DCZ-,d,HR`5[ND7--5DZ{T7@Y=MUT=7=@ZC3)[=?-5D*‘51[=?cd,H7HM7HM*f,H7HM7HM*]75647=:Z7HN=^=GG:Z54HM=•nSˆ’8T“z•“H7MŽ”$*#”z•]7HM7Hz•d,HzC=HMpNH*N•pd,Hz•d,HzC=HMpM=H*N•pd,Hz•p]7HM7Hz•p“z=,,4d,HHN=*]7-47=C3C=HM7>N9%-@Z51,-NH-M=H*%NH=CBM=-HN=*N75QCd,H7HM7HM-N7qH*“Tˆ„“ToŽHN=*]7-B,4,-?`6N=E3*M7Hd,H^=,NHN=GH@HN=*NN*[=b9%C_5Q-C7M7Hd,H*[=_-C_5_56MY=5U7H=H7d,H@HN=*#ifndef NOTEPAD_ H#define NOTEPAD_ H#include <QMainWindow>namespace Ui {class Notepad; }class Notepad : public QMainWindow{ Q_OBJECT public: explicit Notepad( QWidget *parent = 0); ~Notepad( );...