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QTextBrowser的崩潰的SetSource

2011-03-22 192 views
1

我寫了Qt使用QTextBrowser顯示一些本地存儲的HTML應用程序。在啓動時使用它時，它工作正常，但在查詢數據庫以查找HTML文件的路徑後，出現奇怪的錯誤。QTextBrowser的崩潰的SetSource

下面的代碼：

錯誤的部位是調用的SetSource（）。

但是，請注意，我不相信這是一個簡單的數據庫問題，因爲加載一個完全正常的HTML文件作爲一個常變量

void MainWindow::LessonSelection_itemPressedSlot(QListWidgetItem* ITEM) 
{ 
    //selection pressed, run this slot 
    qWarning("ITEM PRESSED"); 
    //display ITEM's name 
    qWarning(ITEM->text().toAscii()); 
    //name of the HTML file 
    QString name = ITEM->text(); 
    //get the HTML Lesson object 
    HTML_Lesson lesson = DatabaseHelper::getLessonWithName(name); 
    //print the HTML path 
    qWarning("HTML PATH:" + lesson.getHTML_Path().toAscii()); 
    //load the HTML file 
    loadHTMLFiles(lesson); 
} 
void MainWindow::loadHTMLFiles(HTML_Lesson& LESSON) 
{ 
    //ERROR HERE 
    HTMLPage->setSource(QUrl(LESSON.getHTML_Path())); 
}

失敗時，代碼失敗，甚至一樣，

void MainWindow::LessonSelection_itemPressedSlot(QListWidgetItem* ITEM) 
{ 
    //selection pressed, run this slot 
     qWarning("ITEM PRESSED"); 
    //display ITEM's name 
    qWarning(ITEM->text().toAscii()); 
    //name of the HTML file 
    QString name = ITEM->text(); 
    //get the HTML Lesson object 
    HTML_Lesson lesson = DatabaseHelper::getLessonWithName(name); 

    //load the HTML file 
    loadHTMLFiles(lesson); 
} 
void MainWindow::loadHTMLFiles(HTML_Lesson& LESSON) 
{ 
    //ERROR HERE 
    HTMLPage->setSource(「telephone.html); 
}

在我的程序不會崩潰調用的SetSource其他地方。

它不能是對象構造的問題，因爲我可以在其他程序中發送一個HTML文件，並將它正常工作。它也不能是數據庫，因爲它不能用於絕對路徑。即使在註釋掉除調用生成錯誤函數之外的所有代碼之後，它也會產生相同的錯誤。 顯示主窗口後是否無法調用setSource？如果是這樣的話，我會用什麼來在整個程序中顯示不同的HTML文件？

請嘗試用自己的HTML文件運行代碼。

這裏的調試器輸出，如果它可以幫助：

sql.html 
QFSFileEngine::open: No file name specified 
ITEM PRESSED 
ANITEM 
*** glibc detected *** /home/thomas/codehelp-build-desktop/codehelp: invalid fastbin entry (free): 0x00000000007b1c30 *** 
======= Backtrace: ========= 
/lib/libc.so.6(+0x774b6)[0x7ffff5c474b6] 
/lib/libc.so.6(cfree+0x73)[0x7ffff5c4dc83] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN10QByteArrayaSERKS_+0x32)[0x7ffff699d4b2] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(+0x14a8c2)[0x7ffff6a598c2] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZNK4QUrl7isValidEv+0x35)[0x7ffff6a59b15] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(+0x6dac8a)[0x7ffff74ccc8a] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN12QTextBrowser9setSourceERK4QUrl+0x4f)[0x7ffff74cef3f] 
/home/thomas/codehelp-build-desktop/codehelp[0x405261] 
/home/thomas/codehelp-build-desktop/codehelp[0x4051a5] 
/home/thomas/codehelp-build-desktop/codehelp[0x4067b9] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectPKS_iPPv+0x298)[0x7ffff6ab80f8] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN11QListWidget11itemPressedEP15QListWidgetItem+0x2f)[0x7ffff75ea87f] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN11QListWidget11qt_metacallEN11QMetaObject4CallEiPPv+0x218)[0x7ffff75eeff8] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectPKS_iPPv+0x298)[0x7ffff6ab80f8] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN17QAbstractItemView7pressedERK11QModelIndex+0x22)[0x7ffff757ae32] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN17QAbstractItemView15mousePressEventEP11QMouseEvent+0x4df)[0x7ffff75855af] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN7QWidget5eventEP6QEvent+0x824)[0x7ffff7055e44] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN6QFrame5eventEP6QEvent+0x2b)[0x7ffff745041b] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN19QAbstractScrollArea13viewportEventEP6QEvent+0x17)[0x7ffff74dfb87] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN17QAbstractItemView13viewportEventEP6QEvent+0x195)[0x7ffff7589c35] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(+0x6efb68)[0x7ffff74e1b68] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN23QCoreApplicationPrivate29sendThroughObjectEventFiltersEP7QObjectP6QEvent+0x7e)[0x7ffff6aa244e] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent+0x80)[0x7ffff6ff5d30] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN12QApplication6notifyEP7QObjectP6QEvent+0x172e)[0x7ffff6ffde8e] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent+0x84)[0x7ffff6aa20a4] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN19QApplicationPrivate14sendMouseEventEP7QWidgetP11QMouseEventS1_S1_PS1_R8QPointerIS0_Eb+0x177)[0x7ffff6ff8f27] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(+0x28b61d)[0x7ffff707d61d] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(_ZN12QApplication15x11ProcessEventEP7_XEvent+0x1156)[0x7ffff707c866] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(+0x2b5038)[0x7ffff70a7038] 
/lib/libglib-2.0.so.0(g_main_context_dispatch+0x1f2)[0x7ffff5521342] 
/lib/libglib-2.0.so.0(+0x442a8)[0x7ffff55252a8] 
/lib/libglib-2.0.so.0(g_main_context_iteration+0x6c)[0x7ffff552545c] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE+0x5c)[0x7ffff6acfbcc] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtGui.so.4(+0x2b4bcf)[0x7ffff70a6bcf] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN10QEventLoop13processEventsE6QFlagsINS_17ProcessEventsFlagEE+0x35)[0x7ffff6aa13f5] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE+0xa6)[0x7ffff6aa1646] 
/home/thomas/qtsdk-2010.05/qt/lib/libQtCore.so.4(_ZN16QCoreApplication4execEv+0xb4)[0x7ffff6aa3484] 
/home/thomas/codehelp-build-desktop/codehelp[0x403b85] 
/lib/libc.so.6(__libc_start_main+0xfe)[0x7ffff5beed8e] 
/home/thomas/codehelp-build-desktop/codehelp[0x403879] 
======= Memory map: ======== 
00400000-00409000 r-xp 00000000 08:16 2763162 /home/thomas/codehelp-build-desktop/codehelp 
00608000-00609000 r--p 00008000 08:16 2763162 /home/thomas/codehelp-build-desktop/codehelp 
00609000-0060a000 rw-p 00009000 08:16 2763162 /home/thomas/codehelp-build-desktop/codehelp 
0060a000-013f9000 rw-p 00000000 00:00 0 [heap] 
7fffddc5a000-7fffddc5f000 r-xp 00000000 08:16 4066237 /usr/lib/libdatrie.so.1.0.3 
7fffddc5f000-7fffdde5e000 ---p 00005000 08:16 4066237 /usr/lib/libdatrie.so.1.0.3 
7fffdde5e000-7fffdde5f000 r--p 00004000 08:16 4066237 /usr/lib/libdatrie.so.1.0.3 
7fffdde5f000-7fffdde60000 rw-p 00005000 08:16 4066237 /usr/lib/libdatrie.so.1.0.3 
7fffdde60000-7fffdde68000 r-xp 00000000 08:16 4066920 /usr/lib/libthai.so.0.1.6 
7fffdde68000-7fffde067000 ---p 00008000 08:16 4066920 /usr/lib/libthai.so.0.1.6 
7fffde067000-7fffde068000 r--p 00007000 08:16 4066920 /usr/lib/libthai.so.0.1.6 
7fffde068000-7fffde069000 rw-p 00008000 08:16 4066920 /usr/lib/libthai.so.0.1.6 
7fffde086000-7fffde0d0000 r--p 00000000 08:16 4983728 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono-Bold.ttf 
7fffde0d0000-7fffde0d9000 r--p 00000000 08:16 4983878 /usr/share/fonts/type1/gsfonts/s050000l.pfb 
7fffde0d9000-7fffde45c000 r--p 00000000 08:16 4983771 /usr/share/fonts/truetype/unfonts/UnBatang.ttf 
7fffde45c000-7fffde94d000 r--p 00000000 08:16 4983775 /usr/share/fonts/truetype/wqy/wqy-microhei.ttc 
7fffde94d000-7fffde96a000 r--p 00000000 08:16 917578 /usr/share/fonts/truetype/msttcorefonts/Webdings.ttf 
7fffde96a000-7fffde980000 r--p 00000000 08:16 4983699 /usr/share/fonts/truetype/thai/Sawasdee.ttf 
7fffde980000-7fffde9cd000 r--p 00000000 08:16 4983658 /usr/share/fonts/truetype/freefont/FreeMono.ttf 
7fffde9cd000-7fffde9f9000 r--p 00000000 08:16 4983670 /usr/share/fonts/truetype/openoffice/opens___.ttf 
7fffde9f9000-7fffdea29000 r--p 00000000 08:16 4983739 /usr/share/fonts/truetype/ttf-indic-fonts-core/Pothana2000.ttf 
7fffdea29000-7fffdea42000 r--p 00000000 08:16 4983733 /usr/share/fonts/truetype/ttf-indic-fonts-core/Kedage-n.ttf 
7fffdea42000-7fffdeb7d000 r--p 00000000 08:16 4983666 /usr/share/fonts/truetype/freefont/FreeSerif.ttf 
7fffdeb7d000-7fffdeb9a000 r--p 00000000 08:16 917558 /usr/share/fonts/truetype/msttcorefonts/Arial_Black.ttf 
7fffdeb9a000-7fffdebeb000 r--p 00000000 08:16 4983731 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif.ttf 
7fffdebeb000-7fffdec3a000 r--p 00000000 08:16 4983729 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono.ttf 
7fffdec3a000-7fffdec84000 r--p 00000000 08:16 917565 /usr/share/fonts/truetype/msttcorefonts/Courier_New.ttf 
7fffdec84000-7fffdf277000 r--p 00000000 08:16 4983671 /usr/share/fonts/truetype/takao/TakaoPGothic.ttf 
7fffdf277000-7fffdf2d5000 r--p 00000000 08:16 4983740 /usr/share/fonts/truetype/ttf-indic-fonts-core/Rachana_04.ttf 
7fffdf2d5000-7fffdf2ef000 r--p 00000000 08:16 4983691 /usr/share/fonts/truetype/thai/Norasi.ttf 
7fffdf2ef000-7fffdf316000 r--p 00000000 08:16 4983748 /usr/share/fonts/truetype/ttf-indic-fonts-core/utkal.ttf 
7fffdf316000-7fffdf32b000 r--p 00000000 08:16 4983741 /usr/share/fonts/truetype/ttf-indic-fonts-core/Rekha.ttf 
7fffdf32b000-7fffdf33d000 r--p 00000000 08:16 4983743 /usr/share/fonts/truetype/ttf-indic-fonts-core/gargi.ttf 
7fffdf33d000-7fffdf34a000 r--p 00000000 08:16 4983749 /usr/share/fonts/truetype/ttf-kacst-one/KacstOne.ttf 
7fffdf34a000-7fffdf3bb000 r--p 00000000 08:16 4983662 /usr/share/fonts/truetype/freefont/FreeSans.ttf 
7fffdf3bb000-7fffdf40d000 r--p 00000000 08:16 4983736 /usr/share/fonts/truetype/ttf-indic-fonts-core/Meera_04.ttf 
7fffdf40d000-7fffdf421000 r--p 00000000 08:16 4983746 /usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_hi.ttf 
7fffdf421000-7fffdf435000 r--p 00000000 08:16 4983745 /usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_gu.ttf 
7fffdf435000-7fffdf458000 r--p 00000000 08:16 4983744 /usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_bn.ttf 
7fffdf458000-7fffdf674000 r--p 00000000 08:16 4983773 /usr/share/fonts/truetype/unfonts/UnDotum.ttf 
7fffdf674000-7fffdf6a2000 r--p 00000000 08:16 4983737 /usr/share/fonts/truetype/ttf-indic-fonts-core/MuktiNarrow.ttf 
7fffdf6a2000-7fffdf6e3000 r--p 00000000 08:16 4983750 /usr/share/fonts/truetype/ttf-khmeros-core/KhmerOS.ttf 
7fffdf6e3000-7fffdf6f9000 r--p 00000000 08:16 4983725 /usr/share/fonts/truetype/thai/Waree.ttf 
7fffdf6f9000-7fffdf70d000 r--p 00000000 08:16 4983818 /usr/share/fonts/type1/gsfonts/n019003l.pfb 
7fffdf70d000-7fffdf751000 r--p 00000000 08:16 917592 /usr/share/fonts/truetype/msttcorefonts/Arial.ttf 
7fffdf751000-7fffdf774000 r--p 00000000 08:16 925046 /usr/share/fonts/truetype/msttcorefonts/Verdana.ttf 
7fffdf774000-7fffdf803000 r--p 00000000 08:16 4983726 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf 
7fffdf803000-7fffdf865000 r--p 00000000 08:16 4983768 /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-BI.ttf 
7fffdf865000-7fffdf8c5000 rw-s 00000000 00:04 14778389 /SYSV00000000 (deleted) 
7fffdf8c5000-7fffdf960000 r--p 00000000 08:16 4983727 /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf 
7fffdf960000-7fffdf9b7000 r-xp 00000000 08:16 3026932 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqtiff.so 
7fffd 
f9b7000-7fffdfbb6000 ---p 00057000 08:16 3026932 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqtiff.so 
7fffdfbb6000-7fffdfbb9000 rw-p 00056000 08:16 3026932 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqtiff.so 
7fffdfbb9000-7fffdfc17000 r-xp 00000000 08:16 3556753 /home/thomas/qtsdk-2010.05/qt/lib/libQtSvg.so.4.7.0 
7fffdfc17000-7fffdfe16000 ---p 0005e000 08:16 3556753 /home/thomas/qtsdk-2010.05/qt/lib/libQtSvg.so.4.7.0 
7fffdfe16000-7fffdfe19000 rw-p 0005d000 08:16 3556753 /home/thomas/qtsdk-2010.05/qt/lib/libQtSvg.so.4.7.0 
7fffdfe19000-7fffdfe1e000 r-xp 00000000 08:16 3026930 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqsvg.so 
7fffdfe1e000-7fffe001e000 ---p 00005000 08:16 3026930 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqsvg.so 
7fffe001e000-7fffe001f000 rw-p 00005000 08:16 3026930 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqsvg.so 
7fffe001f000-7fffe0076000 r-xp 00000000 08:16 3026929 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqmng.so 
7fffe0076000-7fffe0276000 ---p 00057000 08:16 3026929 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqmng.so 
7fffe0276000-7fffe027a000 rw-p 00057000 08:16 3026929 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqmng.so 
7fffe027a000-7fffe02b4000 r-xp 00000000 08:16 3026928 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqjpeg.so 
7fffe02b4000-7fffe04b4000 ---p 0003a000 08:16 3026928 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqjpeg.so 
7fffe04b4000-7fffe04b5000 rw-p 0003a000 08:16 3026928 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqjpeg.so 
7fffe04b5000-7fffe04bc000 r-xp 00000000 08:16 3026927 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqico.so 
7fffe04bc000-7fffe06bb000 ---p 00007000 08:16 3026927 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqico.so 
7fffe06bb000-7fffe06bc000 rw-p 00006000 08:16 3026927 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqico.so 
7fffe06bc000-7fffe06c3000 r-xp 00000000 08:16 3026931 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqgif.so 
7fffe06c3000-7fffe08c3000 ---p 00007000 08:16 3026931 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqgif.so 
7fffe08c3000-7fffe08c4000 rw-p 00007000 08:16 3026931 /home/thomas/qtsdk-2010.05/qt/plugins/imageformats/libqgif.so 
7fffe08c4000-7fffe08c8000 r-xp 00000000 08:16 4333843 /usr/lib/kde4/plugins/imageformats/kimg_xview.so 
7fffe08c8000-7fffe0ac7000 ---p 00004000 08:16 4333843 /usr/lib/kde4/plugins/imageformats/kimg_xview.so 
7fffe0ac7000-7fffe0ac8000 r--p 00003000 08:16 4333843 /usr/lib/kde4/plugins/imageformats/kimg_xview.so 
7fffe0ac8000-7fffe0ac9000 rw-p 00004000 08:16 4333843 /usr/lib/kde4/plugins/imageformats/kimg_xview.so 
7fffe0ac9000-7fffe0ad8000 r-xp 00000000 08:16 4333847 /usr/lib/kde4/plugins/imageformats/kimg_xcf.so 
7fffe0ad8000-7fffe0cd7000 ---p 0000f000 08:16 4333847 /usr/lib/kde4/plugins/imageformats/kimg_xcf.so 
7fffe0cd7000-7fffe0cd8000 r--p 0000e000 08:16 4333847 /usr/lib/kde4/plugins/imageformats/kimg_xcf.so 
7fffe0cd8000-7fffe0cd9000 rw-p 0000f000 08:16 4333847 /usr/lib/kde4/plugins/imageformats/kimg_xcf.so 
7fffe0cd9000-7fffe0cdd000 rw-p 00000000 00:00 0 
7fffe0cdd000-7fffe0ce2000 r-xp 00000000 08:16 4333825 /usr/lib/kde4/plugins/imageformats/kimg_tga.so 
7fffe0ce2000-7fffe0ee1000 ---p 00005000 08:16 4333825 /usr/lib/kde4/plugins/imageformats/kimg_tga.so 
7fffe0ee1000-7fffe0ee2000 r--p 00004000 08:16 4333825 /usr/lib/kde4/plugins/imageformats/kimg_tga.so 
7fffe0ee2000-7fffe0ee3000 rw-p 00005000 08:16 4333825 /usr/lib/kde4/plugins/imageformats/kimg_tga.so 
7fffe0ee3000-7fffe0eec000 r-xp 00000000 08:16 4333822 /usr/lib/kde4/plugins/imageformats/kimg_rgb.so 
7fffe0eec000-7fffe10ec000 ---p 00009000 08:16 4333822 /usr/lib/kde4/plugins/imageformats/kimg_rgb.so 
7fffe10ec000-7fffe10ed000 r--p 00009000 08:16 4333822 /usr/lib/kde4/plugins/imageformats/kimg_rgb.so 
7 fffe10ed000-7fffe10ee000 rw-p 0000a000 08:16 4333822 /usr/lib/kde4/plugins/imageformats/kimg_rgb.so 
7fffe10ee000-7fffe10f3000 r-xp 00000000 08:16 4333846 /usr/lib/kde4/plugins/imageformats/kimg_ras.so 
7fffe10f3000-7fffe12f2000 ---p 00005000 08:16 4333846

其餘的我只好剪掉了

來源

2011-03-22 Prime

+0

是網址有效嗎？ – 2011-03-29 07:23:32

回答

1

我建議打破問題分爲兩個步驟。除了使用QTextBrowser::setSource的，閱讀文件的內容與QFile手動，然後使用QTextEdit::setHtml設置瀏覽器的內容是QString。這使您可以檢查從數據庫返回的文件名是否有效，HTML內容是否有效（通過檢查從QFile中讀取的QString）以及由QTextBrowser :: setSource使用的QUrl和search path的構造不是問題。這種方法應該解決問題，並允許在解決問題後再次使用QTextBrowser :: setSource。

堆棧轉儲似乎暗示着一個迷失指針試圖從free被釋放是在跟蹤中最後一個函數。然而，這可能在Qt資源中很深。上述方法可能比通過大型代碼庫進行排序更快。

來源

2011-03-29 17:00:24

+0

太棒了！生病了嗎 – Prime 2011-03-30 16:03:03

+0

謝謝！我在某個地方解引用了一個錯誤的指針（在數據庫代碼中，我認爲） 一旦我修復了這個問題，它實際上最終會與setSource一起工作 – Prime 2011-03-30 17:14:52

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