qt自定义控件

CONFIG      += plugin debug_and_release
TARGET      = $$qtLibraryTarget(spprogressbarplugin)
TEMPLATE    = lib

DESTDIR     = $$PWD/../lib
HEADER_PATH = $$PWD/../../include
SOURCE_PATH = $$PWD/../../src

HEADERS     +=     $$PWD/spprogressbar.h

SOURCES     +=     $$PWD/spprogressbar.cpp

LIBS        += -L.

greaterThan(QT_MAJOR_VERSION, 4) {
    QT += designer
} else {
    CONFIG += designer
}

target.path = $$[QT_INSTALL_PLUGINS]/designer
INSTALLS    += target
INCLUDEPATH += $$HEADER_PATH/

#ifndef SPPROGRESSBAR_H
#define SPPROGRESSBAR_H

#include <QWidget>
#include <QPainter>
#include <QMouseEvent>

class SpProgressBar : public QWidget
{
    Q_OBJECT

public:
    SpProgressBar(QWidget *parent = 0);
};

#endif

#include "spprogressbar.h"

SpProgressBar::SpProgressBar(QWidget *parent) :
    QWidget(parent)
{

}