myfinddlg.cpp

使用Qt与MySQL C API开发MySQL查询器

// MyFindDlg.cpp: implementation of the MyFindDlg class.
//
//////////////////////////////////////////////////////////////////////

#include "MyFindDlg.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

MyFindDlg::MyFindDlg(QWidget * parent, const char * name)
{
	setCaption("Find");
	setMaximumSize( 400, 130 );
	setFont(QFont("Arial",10));
	QLabel* fw=new QLabel("Find What",this);
	m_fwedit=new QLineEdit(this);
	
	QPushButton* fbut=new QPushButton("Find First",this);
	QPushButton* fnbut=new QPushButton("Find Next",this);
	m_cancelbut=new QPushButton("Cancel",this);
	m_chkcase=new QCheckBox("Case Sensitive",this);

	fw->setGeometry(20,25,120,20);
	m_fwedit->setGeometry(100,25,180,20);
	fbut->setGeometry(300,25,100,20);

	fnbut->setGeometry(300,50,100,20);
	m_cancelbut->setGeometry(300,75,100,20);
	m_chkcase->setGeometry(130,50,120,20);

	m_icharAt=m_iparaAt=0;

	connect(m_cancelbut,SIGNAL(clicked()),this,SLOT(OnCancel()));
	connect(fbut,SIGNAL(clicked()),this,SLOT(findString()));
	connect(fnbut,SIGNAL(clicked()),this,SLOT(findNextString()));
}

MyFindDlg::~MyFindDlg()
{

}

void MyFindDlg::setEdit(QTextEdit *txtEdit)
{
	m_edit=txtEdit;
}

void MyFindDlg::OnCancel()
{
	reject();
}

bool MyFindDlg::findString()
{
	m_icharAt=m_iparaAt=0;
	return findNextString();
}

bool MyFindDlg::findNextString()
{
	assert(m_edit);
	QString sTmp=m_fwedit->text();
	bool bFind=FALSE;
	while (!(bFind=m_edit->find(sTmp,m_chkcase->isChecked(),FALSE,TRUE,&(m_iparaAt),&m_icharAt))
		&& m_iparaAt < m_edit->paragraphs()){
		m_iparaAt++;
	}
	if (!bFind){
		QMessageBox::information(this,"No Found",
			"Don't found the string what you want!");
		return FALSE;
	}
	m_icharAt+=sTmp.length();
	return TRUE;
}