i try to make a basic browser using IWebBrowser2 on dialog based mfc
i insert an active x control into dialog, such as "microsoft web browser"
and i try "AtlAxGetControl" for getting a IWebBrowser2 pointer
but, i always get a e_fail, "res" always fail
void CIWebBrowser2Dlg::OnBnClickedButtonGo() {
CComPtr<IUnknown> punkIE;
CComQIPtr<IWebBrowser2> pWB2;
HWND hWnd;
this->GetDlgItem(IDC_EXPLORER_MAIN, &hWnd);
HRESULT res = AtlAxGetControl(hWnd, &punkIE);
if (res == S_OK) {
pWB2 = punkIE;
if(pWB2) {
pWB2->GoHome();
}
}
}
i did "AtlAxWinInit();" on initdialog
thank you for reading
plz, let me know how to handle it
Or, why not use the class wizard to generate a wrapper class for you. Then, you won't have to worry about the implementation aspects of the control.
Related
I have a MFC application which shows a full screen dialog. While the application is running, I want to disable all user inputs. I tried to disable touch inputs, but edge swiping and some touch inputs are still working. I tried the following code to disable touch gestures:
HRESULT SetTouchDisableProperty(HWND hwnd, BOOL fDisableTouch)
{
IPropertyStore* pPropStore;
HRESULT hrReturnValue = SHGetPropertyStoreForWindow(hwnd, IID_PPV_ARGS(&pPropStore));
if (SUCCEEDED(hrReturnValue))
{
PROPVARIANT var;
var.vt = VT_BOOL;
var.boolVal = fDisableTouch ? VARIANT_TRUE : VARIANT_FALSE;
hrReturnValue = pPropStore->SetValue(PKEY_EdgeGesture_DisableTouchWhenFullscreen, var);
pPropStore->Release();
}
return hrReturnValue;
}
I am using an IPC panel. Please share your ideas how to disable all the touch interactions.
I'm using the embedded web browser control in my dialog-based MFC window and I need to know the HWND of the web browser control in it. I was able to find the following code that claims to retrieve it:
HWND hWndWebBrowser = NULL;
LPUNKNOWN unknown = m_browser.GetControlUnknown();
IWebBrowser2* pWB = NULL;
if(SUCCEEDED(unknown->QueryInterface(IID_IWebBrowser2,(void **)&pWB)))
{
CComPtr<IServiceProvider> pServiceProvider;
if (SUCCEEDED(pWB->QueryInterface(IID_IServiceProvider, (void**)&pServiceProvider)))
{
CComPtr<IOleWindow> pWindow;
if (SUCCEEDED(pServiceProvider->QueryService(SID_SShellBrowser, IID_IOleWindow, (void**)&pWindow)))
{
SHANDLE_PTR hBrowser = 0;
if (SUCCEEDED(pWindow->GetWindow(&hBrowser)))
{
hWndWebBrowser = (HWND)hBrowser;
}
}
}
}
if(unknown)
{
unknown->Release();
}
but the problem is that when it runs, it returns a handle, but not the one I would expect. The best way to illustrate it is with this Spy++ screenshot:
I understand that I can use EnumChildWindows and look for a window with the Internet Explorer_Server class, but I'm somewhat concerned about using this undocumented class name.
Does anyone have a better way to retrieve that (web browser) window handle?
Per Obtaining the HWND for the WebBrowser control, you can use following function to retrieve HWND.
IOleWindow *pOWin;
HWND hBWnd;
HRESULT hRes = m_pBrowserApp->QueryInterface(IID_IOleWindow, (void **)&pOWin);
if (SUCCEEDED(hRes)) {
hRes = pOWin->GetWindow(&hBWnd);
if (SUCCEEDED(hRes)) {
// Place hBWnd-manipulating code here
}
pOWin->Release(); // Missing from the MS example
}
Because the class names (Shell DocObject View and Internet Explorer_Server) could change, the above code should be preferred, although it is unlikely given the fact that Internet Explorer is now discontinued.
The lexical of the question is a little tricky.
The HWND of the (Web Browser) is indeed the answer
that you posted and the answer posted by Santosh Dhanawade.
When a document is loaded, the web browser control creates a
new window or iframe, see the DWebBrowserEvents2::DocumentComplete event.
Event handler parameters:
" pDisp [in] "
A pointer to the IDispatch interface of the window or frame in which the document is loaded. This IDispatch interface can be queried for the IWebBrowser2 interface.
so, changing the question:
"Does anyone have a better way to retrieve that (web browser) window handle?"
to:
"Does anyone have a better way to retrieve that (window or iframe) window handle?"
we have that the window or iframe HWND that you are locking for,
will be abailable after that the document has been completed loaded.
Which means that we can do the follow:
Implement a DocumentComplete event handler throw a raw c or c++ implementation of
IDispatch or an ATL DispEventImpl or ATL DispEventSimpleImpl.
See Understanding COM Event Handling.
Sink our event handler into the the web browser control to get the events report.
And get the window or iframe HWND from the DocumentComplete event:
assuming a raw c++ IDispatch implementation:
IFACEMETHODIMP DWebBrowserEvents2Impl::Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS * pDispParams, VARIANT * pVarResult, EXCEPINFO * pExcepInfo, UINT * puArgErr)
{
if (dispIdMember == DISPID_DOCUMENTCOMPLETE) {
VARIANT variantDispatch;
VariantInit(&variantDispatch);
HRESULT hr = DispGetParam(pDispParams, 0, VT_DISPATCH, &variantDispatch, NULL);
if (SUCCEEDED(hr)) {
IOleWindow* iOleWindow;
hr = variantDispatch.pdispVal->QueryInterface(IID_IOleWindow, (LPVOID*) &iOleWindow);
if (SUCCEEDED(hr)) {
HWND hwnd;
hr = iOleWindow->GetWindow(&hwnd);
iOleWindow->Release();
if (SUCCEEED(hr)){
//now the hwnd correponds to the Internet Explorer_Server window.
//Do what ever you want with the HWND handler.
}
}
}
return S_OK;
}
return E_NOTIMPL;
}
From my experience, the window we're looking for is a direct descendance of the CHtmlView derived CWnd, so I use this hack to get the window and set the focus to it:
static CWnd* findChildWebbrowser(CWnd* pWnd) {
if(pWnd == NULL) { return NULL; }
CWnd* pC = pWnd->GetWindow(GW_CHILD);
if(pC == NULL) { return NULL; };
CString buf;
::GetClassName(pC->GetSafeHwnd(), buf.GetBuffer(2048), 2047);
buf.ReleaseBuffer();
if(buf == _T("Internet Explorer_Server")) {
return pC;
}
return findChildWebbrowser(pC);
}
void CMyWebView::OnSetFocus(CWnd* pOldWnd) {
// CHtmlView::OnSetFocus(pOldWnd);
CWnd* pIE = findChildWebbrowser(this);
if(pIE!=NULL) {
// this makes cursor/page keys work
pIE->SetFocus();
// this makes the TAB key work
pIE->SendMessage(WM_LBUTTONDOWN);
pIE->SendMessage(WM_LBUTTONUP);
}
}
I have a windows application written in C++.
The application generates certain configuration files in a hidden directory.
I want to give user an option to open that directory from my application.
Clicking that option should open a windows explorer like dialog with an input directory location.
I spend time searching for a similar api, but end up with certain dialogs like "DlgDirListComboBoxW" or "GetOpenFileName" or "GetSaveFileName".
I am looking for an api to open normal Windows explorer like Dialog with an input directory location.
It would be really helpful if the api belongs to CommonDialogs section.
You can use the SHBrowseForFolder
It shows a dialog similar to this:
This is a example for how to use it:
BOOL GetFolder(LPCSTR folderpath,
LPCSTR szCaption,
HWND hOwner /*= NULL*/)
{
BOOL retVal = FALSE;
// The BROWSEINFO struct tells the shell
// how it should display the dialog.
BROWSEINFO bi;
memset(&bi, 0, sizeof(bi));
bi.ulFlags = BIF_USENEWUI;
bi.hwndOwner = hOwner;
bi.lpszTitle = szCaption;
// must call this if using BIF_USENEWUI
::OleInitialize(NULL);
// Show the dialog and get the itemIDList for the
// selected folder.
LPITEMIDLIST pIDL = ::SHBrowseForFolder(&bi);
if(pIDL != NULL)
{
// Create a buffer to store the path, then
// get the path.
char buffer[_MAX_PATH] = {'\0'};
if(::SHGetPathFromIDList(pIDL, buffer) != 0)
{
// Set the string value.
folderpath = buffer;
retVal = TRUE;
}
// free the item id list
CoTaskMemFree(pIDL);
}
::OleUninitialize();
return retVal;
}
How about:
HWND hWndOwner = NULL;
ShellExecute(
hWndOwner,
_T("explore"),
_T("c:\\some\\path"),
NULL,
NULL,
SW_SHOWNORMAL);
You can set hWndOwner to your main window handle if you're so inclined and can choose from a variety of other options.
For more information and usage details, check out the MSDN page on ShellExecute.
I'm working on a custom header control CMyHeaderCtrl which is derived from the MFC class CHeaderCtrl and overrides the DrawItem method to do some custom drawing when the application is themed. At first I try to determine the theme font for header items, but it fails and GetThemeFont returns the result 'element not found' (0x80070490).
The application which uses this control is linked against Common Controls 6.
Here is some sample code:
void MyHeaderCtrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
if(IsThemeActive() && IsAppThemed() && ComCtlVersionOK())
{
if(HTHEME hTheme = OpenThemeData(m_hWnd, L"HEADER"))
{
LOGFONTW lfw;
HRESULT hr = GetThemeFont(hTheme, lpDrawItemStruct->hDC, HP_HEADERITEM, HIS_NORMAL, TMT_CAPTIONFONT, &lfw);
ASSERT(hr == S_OK);
// ...
CloseThemeData(hTheme);
}
}
}
I also already tried other properties than TMT_CAPTIONFONT like TMT_SMALLCAPTIONFONT, TMT_BODYFONTand so on. What could be wrong here?
I've never had any luck getting GetThemeFont() to return anything other than E_PROP_ID_UNSUPPORTED (0x80070490), either. Although it's not explicitly stated in MSDN, the idea seems to be that GetThemeFont() would only return something if the theme defined a font different from the default for the particular part and state specified by the other argument. At least, that's what one MSDN blog suggests: http://blogs.msdn.com/b/cjacks/archive/2006/06/02/614575.aspx
Given that, it seems that the correct approach is to try GetThemeFont(), and if that fails, try GetThemeSysFont(), something like this:
HTHEME theme = OpenThemeData(wnd,L"HEADER");
if (theme != 0)
{
LOGFONTW lf;
HRESULT hr = GetThemeFont(theme,dc,
HP_HEADERITEM,HIS_NORMAL,TMT_CAPTIONFONT,&lf);
if (FAILED(hr))
hr = GetThemeSysFont(theme,TMT_CAPTIONFONT,&lf);
ASSERT(SUCCEEDED(hr));
// Do something with the font ...
CloseThemeData(theme);
}
I'm facing some weird (at least for me) behavior on using the Common Item Dialogs in my MFC Windows application running on Windows 7 or Vista.
According to the MSDN http://msdn.microsoft.com/en-us/library/windows/desktop/bb776913(v=vs.85).aspx I'm using the new interfaces to display file open and save dialogs:
bool OpenFileDialog(CString& strFile, CString strTitle, CStringArray& astrFilter, CStringArray& astrFilterExtension, ULONG nFlags, HWND hParentWnd)
{
USES_CONVERSION;
INT_PTR nResult = 0;
INT_PTR nFilterCount = astrFilter.GetCount();
IFileDialog* pfod = 0;
HRESULT hr = ::CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pfod));
if(SUCCEEDED(hr))
{
// New dialog starting with Vista/Windows 7
COMDLG_FILTERSPEC* pOpenTypes = 0;
if((nFilterCount > 0) && (nFilterCount == astrFilterExtension.GetCount()))
{
pOpenTypes = new COMDLG_FILTERSPEC[nFilterCount];
for(int nIdx = 0; nIdx < nFilterCount; nIdx++)
{
pOpenTypes[nIdx].pszName = astrFilter[nIdx].GetBuffer();
pOpenTypes[nIdx].pszSpec = astrFilterExtension[nIdx].GetBuffer();
}
}
// Set the file types to display.
if(pOpenTypes)
{
hr = pfod->SetFileTypes(nFilterCount, pOpenTypes);
if(SUCCEEDED(hr))
hr = pfod->SetFileTypeIndex(0);
}
if(!strFile.IsEmpty())
pfod->SetFileName(strFile);
if(!strTitle.IsEmpty())
pfod->SetTitle(strTitle);
if(SUCCEEDED(hr))
{
// Ensure the dialog only returns file system paths.
DWORD dwFlags;
hr = pfod->GetOptions(&dwFlags);
if(SUCCEEDED(hr))
{
dwFlags |= FOS_FORCEFILESYSTEM;
if(nFlags & OFN_FILEMUSTEXIST)
dwFlags |= FOS_FILEMUSTEXIST;
if(nFlags & OFN_PATHMUSTEXIST)
dwFlags |= FOS_PATHMUSTEXIST;
hr = pfod->SetOptions(dwFlags);
if(SUCCEEDED(hr))
{
// Create an event handling object, and hook it up to the dialog.
IFileDialogEvents* pfde = NULL;
DWORD dwCookie;
// Actually only added for debugging purposes
/*hr = CDialogEventHandler_CreateInstance(IID_PPV_ARGS(&pfde));
if(SUCCEEDED(hr))
{
// Hook up the event handler.
hr = pfod->Advise(pfde, &dwCookie);
if(!SUCCEEDED(hr))
{
pfde->Release();
pfde = 0;
}
}*/
// Now show the dialog. Usually called with hParent == 0
if(hParentWnd)
hr = pfod->Show(::GetWindow(hParentWnd, GW_OWNER));
else
hr = pfod->Show(0);
// do something with the path when the dialog was closed...
So the dialog appears and works fine if I want to select a file from a normal drive. I can navigate through the folders and select any file I want. On leaving the dialog I also get the correct file information.
But it doesn't work for one of the Libraries in the navigation pane on the left side. Whenever I try to select a Library like Documents, Videos or Pictures the dialog doesn't update the right pane which shows the folder/library content.
What I noticed is that on clicking a Library in the file open/save dialog the OnFolderChanging() event of the IFileDialogEvents interface is fired but the OnFolderChange() and OnSelectionChange() are not. Those events are fired if I click and navigate on a "normal" drive like C.
I also tried to call the dialogs early in my InitInstance method to avoid possible side-effects with my other code but this didn't help either.
Is there someone who had the same behavior and was able to resolve this?
Thanks a lot!
So I finally found the answer to this issue. Creating the new MFC project for the application was the actual hint to solve this. The reason was that the "Stack reserve size" was too big. The settings in the old VS6.0 project had the stack size increased to more than 100MB. Apparently the IFileDialog based dialogs do not work properly when the reserved stack size is simply too large (other thing might don't work also as expected). So I had to set it back to 15MB in my case.