We have a pure Win32/C++ app from which we want to be able to detect Tablet Mode on Windows 10.
I have the following code which came from somewhere which uses WRL to access the Windows.UI.ViewManagement.UIViewSettings.UserInteractionMode property:
WRL::ComPtr<IUIViewSettingsInterop> interop;
if (SUCCEEDED(Windows::Foundation::GetActivationFactory(WRL::Wrappers::HStringReference(
RuntimeClass_Windows_UI_ViewManagement_UIViewSettings).Get(),
&interop)) && interop)
{
WRL::ComPtr<vm::IUIViewSettings> pViewSettings;
if (SUCCEEDED(interop->GetForWindow(hWnd, IID_PPV_ARGS(&pViewSettings))) && pViewSettings)
{
vm::UserInteractionMode currentMode;
if (SUCCEEDED(pViewSettings->get_UserInteractionMode(¤tMode)))
return currentMode == vm::UserInteractionMode::UserInteractionMode_Touch;
}
}
This works fine, however we also have another function using WinRT and I gather WinRT is the current technology we should be using for this, so I was trying to work out how to convert the WRL code.
I came up with this code, which compiles fine, but throws an exception in GetForCurrentView():
auto uiSettings = winrt::Windows::UI::ViewManagement::UIViewSettings::GetForCurrentView();
return uiSettings.UserInteractionMode() == winrt::Windows::UI::ViewManagement::UserInteractionMode::Touch;
The error is HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND). I'm assuming there's something I'm meant to be doing to initialise the "current view", similar to how the WRL code provides a window handle to GetForWindow, but I haven't been able to work out how or what that is.
Thanks to #RaymondChen the C++/WinRT equivalent of the WRL code in my question is:
auto uiSettings = winrt::capture<winrt::Windows::UI::ViewManagement::UIViewSettings>
(winrt::get_activation_factory<winrt::Windows::UI::ViewManagement::UIViewSettings>()
.as<IUIViewSettingsInterop>(), &IUIViewSettingsInterop::GetForWindow, hWnd);
return uiSettings.UserInteractionMode() == winrt::Windows::UI::ViewManagement::UserInteractionMode::Touch;
Related
I am currently trying to piece together a shader-based music visualizer. The plan is to read data from the current MMDevice, which I'm trying to follow the documentation for, but I must be doing something wrong because I had to jump through all sorts of hoops to get even just the MMDeviceEnumerator to compile.
In order for the uuids of MMDeviceEnumerator and IMMDeviceEnumerator to be defined, I had to set #define WINAPI_FAMILY WINAPI_FAMILY_GAMES. This was also required for EDataFlow and ERole enumerations to be defined. My first question is if I've missed some configuration somewhere, or if this is the intended method of enabling these things.
Currently, I have the following code in an AudioStream class:
class AudioStream {
public:
AudioStream() {
//SUCCEEDING(CoInitializeEx(nullptr, COINIT_MULTITHREADED));
SUCCEEDING(CoCreateInstance(
__uuidof(IMMDeviceEnumerator),
NULL,
CLSCTX_ALL,
__uuidof(MMDeviceEnumerator),
(void**)&this->mmDeviceEnumerator));
SUCCEEDING(this->mmDeviceEnumerator->GetDefaultAudioEndpoint(
eRender,
eConsole,
&this->mmDevice));
}
private:
IAudioClient* audioClient = NULL;
IAudioCaptureClient* captureClient = NULL;
IMMDeviceEnumerator* mmDeviceEnumerator = NULL;
IMMDevice* mmDevice = NULL;
};
If you're familiar with what the DirectX 12 project template looks like, this object is being instantiated in the Sample3DSceneRenderer constructor. The main issue I'm having right now is the following two errors which are immediately raised during startup:
onecore\com\combase\dcomrem\resolver.cxx(2299)\combase.dll!75AA0DFF: (caller: 75B1CF2C) ReturnHr(1) tid(42a8) 80040154 Class not registered
onecore\com\combase\dcomrem\resolver.cxx(2507)\combase.dll!75B1CF4D: (caller: 75AA29E4) ReturnHr(2) tid(42a8) 80040154 Class not registered
This causes the entire app to hang, and the project template visualization to never appear (the succeeding macro exits). Does anyone have any idea why this is failing? It must have to be something with the CoCreateInstance call :(
You are writing a Universal Windows Platform (UWP) app because that's what the "built-in" DirectX 12 App project template creates in Visual Studio. UWPs do not have access to all the same APIs and IMMDevice is not part of the UWP API surface area.
The fact that you defined WINAPI_FAMILY_GAMES means you hacked the API Family Partition macros which will define the API in a UWP context, but it doesn't mean that API actually works from the AppContainer process that all UWPs run in.
You really have two options:
(1) If you want to write a UWP, then you will need to enumerate audio devices via the proper Windows Runtime APIs which are in the Windows::Devices::Enumeration namespace.
Assuming you are using C++/CX language extensions (instead of the more modern C++/WinRT projections), then this code works:
auto operation = DeviceInformation::FindAllAsync(DeviceClass::AudioRender);
while (operation->Status == Windows::Foundation::AsyncStatus::Started)
{
Sleep(100);
}
if (operation->Status != Windows::Foundation::AsyncStatus::Completed)
{
throw std::runtime_error("FindAllAsync");
}
DeviceInformationCollection^ devices = operation->GetResults();
for (unsigned i = 0; i < devices->Size; ++i)
{
using Windows::Devices::Enumeration::DeviceInformation;
DeviceInformation^ d = devices->GetAt(i);
// d->Id->Data();
// d->Name->Data();
}
Also, if you want to get access to the audio capture device from a UWP, you must add a capability to your manifest to request it via <DeviceCapability Name="microphone"/>. See Microsoft Docs.
You should take the time to read the Microsoft Docs on UWPs so you have a better idea of what's supported and what's not.
(2) If you want to write a Win32 desktop app, use the directx-vs-templates instead which include DirectX 12 starting templates for Win32 desktop apps (plus alternative DirectX templates for UWP if that's your thing).
Whichever appmodel you use, you may want to take a look at DirectX Tool Kit for Audio.
BTW, WINAPI_FAMILY_GAMES is used by the Microsoft GDK for Xbox which is for writing titles for Xbox One and Xbox Series X|S. It uses Win32 APIs and doesn't use Windows Runtime APIs, so it has the IMMDevice interface in it's API surface. See Microsoft Docs.
First of all happy new year to everyone, hope you're doing well!
I'm working on a C++ project in which I need to call a C# DLL I created following the first answer of this post. Once I have the DLL, I need to call it from Qt, so by using dumpcpp and the .tlb file generated by regasm, I managed to get the .cpp and .h files to use my classes. Just as a reference, the namespace of the classes is Wrapper, and the main class is Device with guid {DD4A4896-C105-4C60-839B-B18C99C8FE15}.
Once I have the generated files to use the DLL, if I try to create a Wrapper:: Device instance on Qt, I get the following error:
QAxBase::setControl: requested control {dd4a4896-c105-4c60-839b-b18c99c8fe15} could not be instantiated
QAxBase::qt_metacall: Object is not initialized, or initialization failed
It doesn't give any more information, so I tried to check if the guid was stored on the system registry (I used the regasm command explained on the previously quoted post, and It said that it was successful, but you never know). Opening Registry editor and searching for the Guid revealed that it's present at: Computer\HKEY_CLASSES_ROOT\WOW6432Node\CLSID\{DD4A4896-C105-4C60-839B-B18C99C8FE15}, which, as far as I know, is the right route for these guids, and it points to the right DLL.
I though It may be due to some kind ActiveQt problem, and as the previously quoted post explained how to use that DLL from VS C++, I decided to give it a try, using this as an another reference. I've finished with this code, which is supposed to create an instance of my Device object
#include <iostream>
#include <atlstr.h>
#import "C:\Users\javie\Documents\Wrapper\Wrapper\bin\x86\Release\netstandard2.0\Wrapper.tlb" named_guids raw_interfaces_only
inline void TESTHR(HRESULT x) { if FAILED(x) _com_issue_error(x); };
int main()
{
try
{
TESTHR(CoInitialize(0));
Wrapper::IDevicePtr devPtr = nullptr;
TESTHR(devPtr.CreateInstance("{DD4A4896-C105-4c60-839B-B18C99C8FE15}"));
}
catch (const _com_error& e)
{
CStringW out;
out.Format(L"Exception occurred. HR = %lx, error = %s", e.Error(), e.ErrorMessage());
MessageBoxW(NULL, out, L"Error", MB_OK);
}
CoUninitialize();// Uninitialize COM
std::cout << "Hello World!\n";
}
However, this doesn't work either, the createInstance method throws an exception of Class not registered and HR=80040154. Again, according to Registry editor, the class is registered, so I don't understand the error. I've also tried with devPtr.CreateInstance("Wrapper.Device"), devPtr.CreateInstance("Wrapper::Device") or `devPtr.CreateInstance("Wrapper::CLSID_Device") as the links I posted suggest, but in those cases I get another exception with HR=800401f3 and message Invalid class string.
It doesn't matter whether VS or Qt Creator are opened as administrator or not, I get the exact same error.
I have run out of ideas, and I really need to be able to use that DLL from Qt using the files generated by dumpcpp.
Does any one know what could be happening? It feels quite strange to me.
If your C++ application is 64-bit, that's the answer right there, because your C# component is 32-bit (or MSIL but registered to the 32-bit hive). In situations like these, a simple test using VBScript is always useful.
Write a simple VB Script (test.vbs)
Dim obj
Set obj = CreateObject("Wrapper.Device") ' or whatever your ProgID is
MsgBox TypeName(obj)
Now, run this macro 2 ways: with 32-bit and 64-bit versions of VBScript:
32-bit > c:\windows\SysWow64\cscript.exe test.vbs
64-bit > c:\windows\system32\cscript.exe test.vbs
This is assuming your C# component is dispatch compatible. If it's not, then it will still give you differing results that you can use to debug.
Assuming automation/IDispatch compatible, one will work and one won't if you have registered your component correctly.
Have you registered correctly? When I use regasm, I always use the the switches /tlb /codebase when registering the C# component for COM.
Ok, in case someone find the same error, I'll explain the solution I found.
The problem was that in my case, the C# class I developed depended on another 32 bits dll which was not registered on my PC. Once I registered the other dll, everything worked fine.
I don't know why VS kept telling me that the class was not registered when my class itselft was registered, it was one of its dependencies that wasn't registered.
Anyway, I discovered this thanks to Joseph's comments, so thanks a lot for your help.
#haehn Hi Haehn (XTK)
I'm using edge-XTK with GWT and trying to render a simple STL. However XTK code fails at the line where we assign color to the mesh.
mesh.color = [0.7,0,0] // this line fails
Error message emitted by XTK code: "Invalid color"
This behavior is observed only when using XTK with GWT.
The error seems to be coming from this XTK code snippet
X.displayable.prototype.__defineSetter__('color', function(color) {
// we accept only numbers as arguments
if (!goog.isDefAndNotNull(color) || !(color instanceof Array) ||
(color.length != 3)) {
throw new Error('Invalid color.');
}
I'm guessing that the issue is with the way GWT builds page with iframes... because of which the above if condition could be failing in GWT. I think if you replace the above check with following snippet (got idea from: here).
It might fix the problem.
use goog.isArray(color) instead of (color instanceof Array)
Can you please investigate and comment?
Edit:
Hi XTK
Here is the code snippet which shows how I'm using XTK with GWT.
public class TestGwtXtk implements EntryPoint {
public void onModuleLoad() {
testXtk();
}
// GWT JSNI method, which allows mixing Java and JS natively.
// it is akin using c++ or c libraries in java or android
private native void testXtk() /*-{
var r = new $wnd.X.renderer3D();
r.container = 'xtk_container'; // div ele
r.config.PROGRESSBAR_ENABLED = false;
r.init();
cube = new $wnd.X.cube();
cube.lengthX = cube.lengthY = cube.lengthZ = 20;
cube.color = [ 1, 1, 1 ]; // fails here in XTK code
cube.center = [ 0, 0, 0 ]; // fails here in XTK code
r.add(cube);
r.render();
}-*/;
}
As noted by the inline comments, use of javascript array fails. Failure is not because js array usage, such as [0,0,0] or new Array(0,0,0) is wrong. Failure is because the way XTK code checks for "instance of Array".
Edit: 2
Dear XTK
I was able to checkout XTK code from git, make changes that I'm proposing, re-build XTK.js and finally test successfully that my fix solves the problem.
for example: in displayable.js I commented one line and added another line thus:
// if (!goog.isDefAndNotNull(color) || !(color instanceof Array) || (color.length != 3)) {
if (!goog.isDefAndNotNull(color) || !(goog.isArray(color)) || (color.length != 3)) {
I made similar changes in couple of other places in the xtk codebase to get my usecase going. Explanation of why this is the right solution is here: Closure: The Definitive Guide. Would you please consider making this fix in the codebase for release 8? Thank you
Using XTK with GWT ? What do you mean ? Did you write your own wrappers to compile code with xtk calls from Java to JavaScript ? Or do you directly use xtk.js in the war file and write manualy some JavaScript using it ? Or do you only use GAE (Google App Engine), the Google environnement for web applications (the ones made with GWT, but also not compiled from Java ones). Could you be more accurate please ?
Here they deal with some issues with GWT and type test, did you try to create your array with the "new" operator ?
var mycolor = new Array(0.7,0,0);
mesh.color = mycolor;
I'm looking for a simple example code for C++\IronPython integration, i.e. embedding python code inside a C++, or better yet, Visual C++ program.
The example code should include: how to share objects between the languages, how to call functions\methods back and forth etc...
Also, an explicit setup procedure would help too. (How to include the Python runtime dll in Visual Studio etc...)
I've found a nice example for C#\IronPython here, but couldn't find C++\IronPython example code.
UPDATE - I've written a more generic example (plus a link to a zip file containing the entire VS2008 project) as entry on my blog here.
Sorry, I am so late to the game, but here is how I have integrated IronPython into a C++/cli app in Visual Studio 2008 - .net 3.5. (actually mixed mode app with C/C++)
I write add-ons for a map making applicaiton written in Assembly. The API is exposed so that C/C++ add-ons can be written. I mix C/C++ with C++/cli. Some of the elements from this example are from the API (such as XPCALL and CmdEnd() - please just ignore them)
///////////////////////////////////////////////////////////////////////
void XPCALL PythonCmd2(int Result, int Result1, int Result2)
{
if(Result==X_OK)
{
try
{
String^ filename = gcnew String(txtFileName);
String^ path = Assembly::GetExecutingAssembly()->Location;
ScriptEngine^ engine = Python::CreateEngine();
ScriptScope^ scope = engine->CreateScope();
ScriptSource^ source = engine->CreateScriptSourceFromFile(String::Concat(Path::GetDirectoryName(path), "\\scripts\\", filename + ".py"));
scope->SetVariable("DrawingList", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingList::typeid));
scope->SetVariable("DrawingElement", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingElement::typeid));
scope->SetVariable("DrawingPath", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingPath::typeid));
scope->SetVariable("Node", DynamicHelpers::GetPythonTypeFromType(AddIn::Node::typeid));
source->Execute(scope);
}
catch(Exception ^e)
{
Console::WriteLine(e->ToString());
CmdEnd();
}
}
else
{
CmdEnd();
}
}
///////////////////////////////////////////////////////////////////////////////
As you can see, I expose to IronPython some objects (DrawingList, DrawingElement, DrawingPath & Node). These objects are C++/cli objects that I created to expose "things" to IronPython.
When the C++/cli source->Execute(scope) line is called, the only python line
to run is the DrawingList.RequestData.
RequestData takes a delegate and a data type.
When the C++/cli code is done, it calls the delegate pointing to the
function "diamond"
In the function diamond it retrieves the requested data with the call to
DrawingList.RequestedValue() The call to DrawingList.AddElement(dp) adds the
new element to the Applications visual Database.
And lastly the call to DrawingList.EndCommand() tells the FastCAD engine to
clean up and end the running of the plugin.
import clr
def diamond(Result1, Result2, Result3):
if(Result1 == 0):
dp = DrawingPath()
dp.drawingStuff.EntityColor = 2
dp.drawingStuff.SecondEntityColor = 2
n = DrawingList.RequestedValue()
dp.Nodes.Add(Node(n.X-50,n.Y+25))
dp.Nodes.Add(Node(n.X-25,n.Y+50))
dp.Nodes.Add(Node(n.X+25,n.Y+50))
dp.Nodes.Add(Node(n.X+50,n.Y+25))
dp.Nodes.Add(Node(n.X,n.Y-40))
DrawingList.AddElement(dp)
DrawingList.EndCommand()
DrawingList.RequestData(diamond, DrawingList.RequestType.PointType)
I hope this is what you were looking for.
If you don't need .NET functionality, you could rely on embedding Python instead of IronPython. See Python's documentation on Embedding Python in Another Application for more info and an example. If you don't mind being dependent on BOOST, you could try out its Python integration library.
I'm trying to write a Windows Explorer thumbnail handler for our custom file type. I've got this working fine for the preview pane, but am having trouble getting it to work for the thumbnails.
Windows doesn't even seem to be trying to call the DllGetClassObject entry point.
Before I continue, note that I'm using Windows 7 and unmanaged C++.
I've registered the following values in the registry:
HKCR\CLSID\<my guid>
HKCR\CLSID\<my guid>\InprocServer32 (default value = path to my DLL)
HKCR\CLSID\<my guid>\InprocServer32\ThreadingModel (value = "Apartment")
HKCR\.<my ext>\shellex\{E357FCCD-A995-4576-B01F-234630154E96} (value = my guid)
I've also tried using the Win SDK sample, and that doesn't work. And also the sample project in this article (http://www.codemonkeycodes.com/2010/01/11/ithumbnailprovider-re-visited/), and that doesn't work.
I'm new to shell programming, so not really sure the best way of debugging this. I've tried attaching the debugger to explorer.exe, but that doesn't seem to work (breakpoints get disabled, and none of my OutputDebugStrings get displayed in the output window). Note that I tried setting the "DesktopProcess" in the registry as described in the WinSDK docs for debugging the shell, but I'm still only seeing one explorer.exe in the task manager - so that "may" be why I can't debug it??
Any help with this would be greatly appreciated!
Regards,
Dan.
I stumbled across this since you mentioned my blog ( codemonkeycodes.com ).
What problem are you having with my sample? Did you register you DLL using regsvr32? What version of Windows 7 are you on, 32 or 64?
Update:
I can't say what is or isn't working for you. I just downloaded the sample from my site, followed the directions and change the function
STDMETHODIMP CThumbnailProvider::GetThumbnail... to look like
{
*phbmp = NULL;
*pdwAlpha = WTSAT_UNKNOWN;
ULONG_PTR token;
GdiplusStartupInput input;
if (Ok == GdiplusStartup(&token, &input, NULL))
{
//gcImage.LogBuffer();
Bitmap * pBitmap = new Bitmap(188, 141);
if( pBitmap )
{
Color color(0, 0, 0);
pBitmap->GetHBITMAP(color, phbmp);
}
}
GdiplusShutdown(token);
if( *phbmp != NULL )
return NOERROR;
return E_NOTIMPL;
}
I registered the DLL and then created a new file with the proper extension, and tada, I had a nice black thumbnail.
I wish I could help you. Maybe you want to email me your code?
I've exactly the same problem. I cant make SDK or any sample works. I need COM sample because I must call Microsoft.Jet.OLEDB.4.0 which works only on 32 bits system.
I couldnt make this work: link
This works if AnyCPU is specified when compiling. Cant make it works for x86: link
This was nice under XP works like a charm: link
This show Adobe had problems with thumbnail An MS with Office 2007 (32 bits): link