本文整理汇总了C++中IFileDialog::QueryInterface方法的典型用法代码示例。如果您正苦于以下问题：C++ IFileDialog::QueryInterface方法的具体用法？C++ IFileDialog::QueryInterface怎么用？C++ IFileDialog::QueryInterface使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IFileDialog的用法示例。
在下文中一共展示了IFileDialog::QueryInterface方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: openBrowseDialogCore
void openBrowseDialogCore(FileDialogType type, const Path& defaultPath, const String& filterList,
Vector<Path>& paths, AsyncOp& returnValue)
{
// Init COM library.
CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
IFileDialog* fileDialog = nullptr;
UINT32 dialogType = ((UINT32)type & (UINT32)FileDialogType::TypeMask);
bool isOpenDialog = dialogType == (UINT32)FileDialogType::OpenFile || dialogType == (UINT32)FileDialogType::OpenFolder;
// Create dialog
IID classId = isOpenDialog ? CLSID_FileOpenDialog : CLSID_FileSaveDialog;
CoCreateInstance(classId, nullptr, CLSCTX_ALL, IID_PPV_ARGS(&fileDialog));
addFiltersToDialog(fileDialog, filterList);
setDefaultPath(fileDialog, defaultPath);
// Apply multiselect flags
bool isMultiselect = false;
if (isOpenDialog)
{
if (dialogType == (UINT32)FileDialogType::OpenFile)
{
if (((UINT32)type & (UINT32)FileDialogType::Multiselect) != 0)
{
DWORD dwFlags;
fileDialog->GetOptions(&dwFlags);
fileDialog->SetOptions(dwFlags | FOS_ALLOWMULTISELECT);
isMultiselect = true;
}
}
else
{
DWORD dwFlags;
fileDialog->GetOptions(&dwFlags);
fileDialog->SetOptions(dwFlags | FOS_PICKFOLDERS);
}
}
// Show the dialog
bool finalResult = false;
// Need to enable all windows, otherwise when the browse dialog closes the active window will become some
// background window
Win32Window::_enableAllWindows();
if (SUCCEEDED(fileDialog->Show(nullptr)))
{
if (isMultiselect)
{
// Get file names
IFileOpenDialog* fileOpenDialog;
fileDialog->QueryInterface(IID_IFileOpenDialog, (void**)&fileOpenDialog);
IShellItemArray* shellItems = nullptr;
fileOpenDialog->GetResults(&shellItems);
getPaths(shellItems, paths);
shellItems->Release();
fileOpenDialog->Release();
}
else
{
// Get the file name
IShellItem* shellItem = nullptr;
fileDialog->GetResult(&shellItem);
LPWSTR filePath = nullptr;
shellItem->GetDisplayName(SIGDN_FILESYSPATH, &filePath);
paths.push_back((Path)UTF8::fromWide(WString(filePath)));
CoTaskMemFree(filePath);
shellItem->Release();
}
finalResult = true;
}
// Restore modal window state (before we enabled all windows)
Win32Window::_restoreModalWindows();
CoUninitialize();
returnValue._completeOperation(finalResult);
}示例2: runModalInternal
//-----------------------------------------------------------------------------
bool VistaFileSelector::runModalInternal ()
{
fileDialog = 0;
HRESULT hr = -1;
if (style == kSelectSaveFile)
{
hr = CoCreateInstance (CLSID_FileSaveDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARG(IFileDialog, &fileDialog));
if (defaultSaveName)
{
fileDialog->SetFileName (UTF8StringHelper (defaultSaveName));
}
}
else
{
hr = CoCreateInstance (CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARG(IFileDialog, &fileDialog));
if (SUCCEEDED (hr))
{
if (style == kSelectDirectory)
{
DWORD dwOptions = 0;
hr = fileDialog->GetOptions (&dwOptions);
if (SUCCEEDED (hr))
hr = fileDialog->SetOptions (dwOptions | FOS_PICKFOLDERS);
if (FAILED (hr))
{
fileDialog->Release ();
fileDialog = 0;
return false;
}
}
if (allowMultiFileSelection)
{
DWORD dwOptions = 0;
hr = fileDialog->GetOptions (&dwOptions);
if (SUCCEEDED (hr))
hr = fileDialog->SetOptions (dwOptions | FOS_ALLOWMULTISELECT);
if (FAILED (hr))
{
fileDialog->Release ();
fileDialog = 0;
return false;
}
}
}
}
if (FAILED (hr))
{
fileDialog = 0;
return false;
}
if (title)
hr = fileDialog->SetTitle (UTF8StringHelper (title));
DWORD numExtensions = 0;
DWORD defaultFileTypeIndex = 0;
COMDLG_FILTERSPEC* filters = buildExtensionFilter (extensions, defaultExtension, numExtensions, defaultFileTypeIndex);
if (filters)
{
fileDialog->SetFileTypes (numExtensions, filters);
if (defaultFileTypeIndex)
fileDialog->SetFileTypeIndex (defaultFileTypeIndex);
}
if (initialPath && _SHCreateItemFromParsingName)
{
IShellItem* shellItem;
hr = _SHCreateItemFromParsingName (UTF8StringHelper (initialPath), 0, IID_PPV_ARG (IShellItem, &shellItem));
if (SUCCEEDED (hr))
{
fileDialog->SetFolder (shellItem);
shellItem->Release ();
}
}
Win32Frame* win32Frame = frame->getPlatformFrame () ? dynamic_cast<Win32Frame*> (frame->getPlatformFrame ()) : 0;
hr = fileDialog->Show (win32Frame ? win32Frame->getPlatformWindow () : 0);
if (SUCCEEDED (hr))
{
if (allowMultiFileSelection)
{
IFileOpenDialog* openFileDialog = 0;
hr = fileDialog->QueryInterface (IID_PPV_ARG(IFileOpenDialog, &openFileDialog));
if (SUCCEEDED (hr))
{
IShellItemArray* items;
hr = openFileDialog->GetResults (&items);
if (SUCCEEDED (hr))
{
DWORD count;
hr = items->GetCount (&count);
for (DWORD i = 0; i < count; i++)
{
IShellItem* item;
hr = items->GetItemAt (i, &item);
if (SUCCEEDED (hr))
{
LPWSTR filesysPath = 0;
hr = item->GetDisplayName (SIGDN_FILESYSPATH, &filesysPath);
if (SUCCEEDED (hr))
{
//.........这里部分代码省略.........