... Windows),47=CD77C3N7qH*E3]C=IH5?N7qHd,H-47=CD!=IHd,H.:,23*E3C=IHFeE3C=IHJM=5<5?!=IHd,H-47=7rN1*Bài 14. Tìm hiểu và sử dụng Qt để viết chương trình tạo một cửa sổ chương trình điển hình. ... QMessageBox::critical(this, tr("Error"), tr("Could not open file")); return; } QTextStream in(&file); ui->textEdit->setText(in.readAll()); file.close(); }Œm-CM=HˆNHf,H=CHFJQrCDDN4N2d,H*<7/.5L^=d,H56?@eCDa7a%L^:†DN4*%[=<CDd,H@[=CZd,HNHFJ@7/.5[%d,H<QCZ56*%d,HIEQCZ56@[=MY3+!HMM=HK05QQrCDDN4CDE:,a*5?v,MY3,N+H07H=C@C-2=:qH+f,H*m-C7H={,,FJ7/.D^=d,HCD+7*DM=5<<Q56Qr7H0H*=5<[=,MHFJd,H5Q7/,4d,H5.-*K1L[=MY3-C7FJ*m-C-,-9%IC\%237.Ev*QMY3+f,HS=,@+f,H@+CHMM=HK0-+H07H=C@CBM=-HN=*NN#include ... }Œm-CM=HˆNHf,H=CHFJQrCDDN4N2d,H*<7/.5L^=d,H56?@eCDa7a%L^:†DN4*%[=<CDd,H@[=CZd,HNHFJ@7/.5[%d,H<QCZ56*%d,HIEQCZ56@[=MY3+!HMM=HK05QQrCDDN4CDE:,a*5?v,MY3,N+H07H=C@C-2=:qH+f,H*m-C7H={,,FJ7/.D^=d,HCD+7*DM=5<<Q56Qr7H0H*=5<[=,MHFJd,H5Q7/,4d,H5.-*K1L[=MY3-C7FJ*m-C-,-9%IC\%237.Ev*QMY3+f,HS=,@+f,H@+CHMM=HK0-+H07H=C@CBM=-HN=*NN#include <QFileDialog>#include <QFile>#include <QMessageBox>#include <QTextStream>:4M6/K1L@[=MuQM=M,…==H…7H7HFJ@MY3+f,HS=,5Q47=CDDN475<L<Q,d,HV5r4r7`V5r*[=CH5647=:Z+SHMH77HN=*NN@M=void...