免费教你开发IE插件Toolbar的文章可真是少见。还好我在codeproject里找到一篇。不过还是花了一天的时间才自己编写一个Google Search Toolbar。
如果你下载了Internet EXPlorer Toolbar (Deskband) Tutorial的源代码后编译不通过,也不用奇怪,我就是耽搁在这些地方。先说说都有哪些编译问题。
1.编译的问题 如果遇到下面的问题,就说明commctrl.h的版本低。我们完全可以不用TBSTYLE_EX_MIXEDBUTTONS,用TBSTYLE_EX_DRAWDDARROWS就行。另外的三个删掉,换成TBSTYLE_BUTTON TBSTYLE_AUTOSIZE,这个问题就解决了。
error C2065: 'TBSTYLE_EX_MIXEDBUTTONS' : undeclared identifier error C2065: 'BTNS_BUTTON' : undeclared identifier error C2065: 'BTNS_AUTOSIZE' : undeclared identifier error C2065: 'BTNS_SHOWTEXT' : undeclared identifier 如果遇到下面问题,把工程文件(dsp)里面的/D _ATL_MIN_CRT删掉。
Linking... Creating library ReleaseUMinDependency/MotleyFool.lib and object ReleaseUMinDependency/MotleyFool.exp LIBCMT.lib(crt0.obj) : error LNK2001: unresolved external symbol _main ReleaseUMinDependency/MotleyFool.dll : fatal error LNK1120: 1 unresolved externals Error executing link.exe. MotleyFool.dll - 2 error(s), 0 warning(s) 如果你自己重新编写一个新的项目实现IE Toolbar的话,注意一下2个地方。
1.注意CMFToolbar的消息映射顺序。CHAIN_MSG_MAP_MEMBER一定要在WM_CREATE的前面。
BEGIN_MSG_MAP(CToolbarWnd) CHAIN_MSG_MAP_MEMBER(m_EditWnd) MESSAGE_HANDLER(WM_CREATE, OnCreate) … END_MSG_MAP() 2.注意CReflectionWnd的消息映射顺序。WM_CREATE一定要在CHAIN_MSG_MAP_MEMBER的前面。
BEGIN_MSG_MAP(CReflectWnd) MESSAGE_HANDLER(WM_CREATE, OnCreate) CHAIN_MSG_MAP_MEMBER(m_ToolbarWnd) END_MSG_MAP() 3.Google Search Toolbar
codeproject有非常详细的开发步骤,在这里就不重复了。本节的目的是实现Google Search功能。创建ColimasBar工程,创建CColimasBar类,IE Plugin接口:
public CComObjectRootEx<CComSingleThreadModel>, public CComCoClass<CColimasBar, &CLSID_ColimasBar>, public IDeskBand, public IInputObject, public IObjectWithSite, public IDispatchImpl<IColimasBar, &IID_IColimasBar, &LIBID_IEBASELib> 创建CEditWnd类,输入栏控件,继承
public CWindowImpl<CEditWnd> 创建CReflectWnd类,消息传递空间,继承
public CWindowImpl<CEditWnd> 创建CToolbarWnd类,Toolbar控件,继承
public CWindowImpl<CEditWnd> 修改Toolbar的Title:
const WCHAR TITLE_CColimasBar[] = L"Google"; 修改Button的Title:
TCHAR* pCaption = _T("Search!"); 增加Button点击事件的Google Search处理函数GetValue
void CToolbarWnd::GetValue() { // if we have a web browser pointer then try to navigate to google site to retrieve search if (m_pBrowser) { VARIANT vEmpty; VariantInit(&vEmpty); m_pBrowser->Stop(); _bstr_t bsSite; // if the user has entered url then append them to the edit if (m_EditWnd.GetWindowTextLength()) { WCHAR *bstr = NULL; m_EditWnd.GetWindowText(&bstr);
UINT i= WideCharToMultiByte(CP_UTF8,0,bstr,-1,NULL,0,NULL,NULL); //双字节转换 char *strB=new char[i]; WideCharToMultiByte (CP_UTF8,0,bstr,-1,strB,i,NULL,NULL); //转换为ASCII UINT len=i; char* tmp=new char[len*3]; tmp[0]='\0';
for(i=0;i<len-1;i++) { byte j= (unsigned char)strB[i]; sprintf(tmp,"%s%%%x",tmp,j); //转换为16进制。
}
bsSite = L"http://www.google.com/search?hl=zh-CN&q="; //Google Search字符串 bsSite += tmp; bsSite += "&rls=com.microsoft:en-US&ie=utf8&oe=utf8"; SysFreeString(bstr); delete[] strB; } else bsSite = "http://www.google.com/"; // have the webrowser navigate to the site URL requested depending on user input. m_pBrowser->Navigate(bsSite, &vEmpty, &vEmpty, &vEmpty, &vEmpty); } }
(出处:网侠)
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