最近做项目,开始做就卡了壳,以前从来没碰到过,很简单的一个程序,出现如下
错误: 
- Starting E:\test\bin\app.exe... 
 - QWidget::create: Failed to create window () 
 - Error - RtlWerpReportException failed with status code :-1073741823. Will try to launch the process directly
 - RtlWerpReportException failed with status code :-1073741823. Will try to launch the process directly
 
代码如下:
main.cpp
- #include <QtGui/QApplication> 
 - #include "mainwindow.h" 
 - int main(int argc, char *argv[]) 
 - { 
 -     QApplication a(argc, argv); 
 -     MainWindow w; 
 -     w.show(); 
 -     return a.exec(); 
 - }
 
mainwindow.h:
- #ifndef MAINWINDOW_H 
 - #define MAINWINDOW_H 
 - #include <QMainWindow> 
 - #include <QTimer> 
 - #include "screen.h" 
 - namespace Ui { 
 -     class MainWindow; 
 - } 
 - class MainWindow : public QMainWindow 
 - { 
 -     Q_OBJECT 
 - public: 
 -     explicit MainWindow(QWidget *parent = 0); 
 -     ~MainWindow(); 
 - private: 
 -     Ui::MainWindow *ui; 
 -     Screen *screen; 
 -     QTimer *_timer; 
 - }; 
 - #endif // MAINWINDOW_H
 
mainwindow.cpp:
- #include "mainwindow.h" 
 - #include "ui_mainwindow.h" 
 - MainWindow::MainWindow(QWidget *parent) : 
 -     QMainWindow(parent, Qt::FramelessWindowHint), 
 -     ui(new Ui::MainWindow) 
 - { 
 -     ui->setupUi(this); 
 -     screen = new Screen(this);      // 造了一个screen,继承自QFrame
 -     //_timer = new QTimer(this);
 - } 
 - MainWindow::~MainWindow() 
 - { 
 -     delete ui; 
 - }
 
做如下测试:
1. 屏蔽掉_timer的构建,clean工程能正常
编译通过,并正常运行
显示;   ------   此步OK!
2. 打开_timer的构建,直接运行程序,程序段错误,出现如下错误   --------   
 Error!Starting E:\test\bin\app.exe... QWidget::create: Failed to create window () Error - RtlWerpReportException failed with status code :-1073741823. Will try to launch the process directlyRtlWerpReportException failed with status code :-1073741823. Will try to launch the process directly 3. 对整个工程进行clean(此时_timer的构建未屏蔽),再编译运行,程序正常显示;   
代码本身并未发现任何“未初始化”错误,请问如上错误如何解释?
单纯clean下工程倒能绕过错误,但每次new个新对象,就得clean次那是相当繁琐。