Transcript int - QCon SP

C# e C++/CX – O que há de novo
nas linguagens para suportar o
desenvolvimento de aplicações
modernas
Elemar Júnior (@elemarjr)
Microsoft Visual C# MVP
http://elemarjr.net
aka.ms/roslyn
#include <windows.h>
#include <shobjidl.h>
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED |
COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
IFileOpenDialog *pFileOpen;
// Create the FileOpenDialog object.
hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL,
IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
if (SUCCEEDED(hr))
{
// Show the Open dialog box.
hr = pFileOpen->Show(NULL);
// Get the file name from the dialog box.
if (SUCCEEDED(hr))
{
IShellItem *pItem;
hr = pFileOpen->GetResult(&pItem);
if (SUCCEEDED(hr))
{
PWSTR pszFilePath;
hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
// Display the file name to the user.
if (SUCCEEDED(hr))
{
MessageBox(NULL, pszFilePath, L"File Path", MB_OK);
CoTaskMemFree(pszFilePath);
}
pItem->Release();
}
}
pFileOpen->Release();
}
CoUninitialize();
}
return 0;
}
#include <windows.h>
#include <shobjidl.h>
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED |
COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
IFileOpenDialog *pFileOpen;
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED |
COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
// Create the FileOpenDialog object.
hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL,
IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
if (SUCCEEDED(hr))
{
// Show the Open dialog box.
hr = pFileOpen->Show(NULL);
// Get the file name from the dialog box.
if (SUCCEEDED(hr))
{
IShellItem *pItem;
hr = pFileOpen->GetResult(&pItem);
if (SUCCEEDED(hr))
{
PWSTR pszFilePath;
hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
// Display the file name to the user.
if (SUCCEEDED(hr))
{
MessageBox(NULL, pszFilePath, L"File Path", MB_OK);
CoTaskMemFree(pszFilePath);
}
pItem->Release();
}
}
pFileOpen->Release();
}
CoUninitialize();
}
return 0;
}
CoUninitialize();
}
#include <windows.h>
#include <shobjidl.h>
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED |
COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
IFileOpenDialog *pFileOpen;
// Create the FileOpenDialog object.
hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL,
IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
if (SUCCEEDED(hr))
{
// Show the Open dialog box.
hr = pFileOpen->Show(NULL);
// Get the file name from the dialog box.
if (SUCCEEDED(hr))
{
IShellItem *pItem;
hr = pFileOpen->GetResult(&pItem);
if (SUCCEEDED(hr))
{
PWSTR pszFilePath;
hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
// Create the FileOpenDialog object.
hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL,
IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
if (SUCCEEDED(hr))
{
// Display the file name to the user.
if (SUCCEEDED(hr))
{
MessageBox(NULL, pszFilePath, L"File Path", MB_OK);
CoTaskMemFree(pszFilePath);
}
pItem->Release();
}
}
pFileOpen->Release();
}
CoUninitialize();
}
return 0;
}
pFileOpen->Release();
}
#include <windows.h>
#include <shobjidl.h>
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED |
COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
IFileOpenDialog *pFileOpen;
// Create the FileOpenDialog object.
hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL,
IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
// Show the Open dialog box.
hr = pFileOpen->Show(NULL);
if (SUCCEEDED(hr))
{
// Show the Open dialog box.
hr = pFileOpen->Show(NULL);
// Get the file name from the dialog box.
if (SUCCEEDED(hr))
{
IShellItem *pItem;
hr = pFileOpen->GetResult(&pItem);
if (SUCCEEDED(hr))
{
PWSTR pszFilePath;
hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
// Display the file name to the user.
if (SUCCEEDED(hr))
{
MessageBox(NULL, pszFilePath, L"File Path", MB_OK);
CoTaskMemFree(pszFilePath);
}
pItem->Release();
}
}
pFileOpen->Release();
}
CoUninitialize();
}
return 0;
}
if (SUCCEEDED(hr))
{
}
#include <windows.h>
#include <shobjidl.h>
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED |
COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
IFileOpenDialog *pFileOpen;
// Create the FileOpenDialog object.
hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL,
IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
if (SUCCEEDED(hr))
{
// Show the Open dialog box.
hr = pFileOpen->Show(NULL);
// Get the file name from the dialog box.
if (SUCCEEDED(hr))
{
IShellItem *pItem;
hr = pFileOpen->GetResult(&pItem);
if (SUCCEEDED(hr))
{
PWSTR pszFilePath;
hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
IShellItem *pItem;
hr = pFileOpen->GetResult(&pItem);
if (SUCCEEDED(hr))
{
// Display the file name to the user.
if (SUCCEEDED(hr))
{
MessageBox(NULL, pszFilePath, L"File Path", MB_OK);
CoTaskMemFree(pszFilePath);
}
pItem->Release();
}
}
pFileOpen->Release();
}
CoUninitialize();
}
return 0;
}
pItem->Release();
}
#include <windows.h>
#include <shobjidl.h>
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED |
COINIT_DISABLE_OLE1DDE);
if (SUCCEEDED(hr))
{
IFileOpenDialog *pFileOpen;
// Create the FileOpenDialog object.
hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL,
IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
if (SUCCEEDED(hr))
{
// Show the Open dialog box.
hr = pFileOpen->Show(NULL);
// Get the file name from the dialog box.
if (SUCCEEDED(hr))
{
IShellItem *pItem;
hr = pFileOpen->GetResult(&pItem);
if (SUCCEEDED(hr))
{
PWSTR pszFilePath;
hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
// Display the file name to the user.
if (SUCCEEDED(hr))
{
MessageBox(NULL, pszFilePath, L"File Path", MB_OK);
CoTaskMemFree(pszFilePath);
}
pItem->Release();
}
}
pFileOpen->Release();
}
CoUninitialize();
}
return 0;
}
PWSTR pszFilePath;
hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
// Display the file name to the user.
if (SUCCEEDED(hr))
{
MessageBox(NULL, pszFilePath, L"File Path", MB_OK);
CoTaskMemFree(pszFilePath);
}
#pragma once
namespace WinRTComponentCpp
{
public ref class Calculator sealed
{
public:
Calculator();
int Add(int a, int b);
};
}
#include "pch.h“
#include "Calculator.h"
using namespace WinRTComponentCpp;
Calculator::Calculator(){}
int Calculator::Add(int a, int b)
{
return a + b;
}
void MainPage::OnNavigatedTo(NavigationEventArgs^ e)
{
(void)e; // Unused parameter
WinRTComponentCS::Calculator^ calculator =
ref new WinRTComponentCS::Calculator();
this->AddResultTextBox->Text =
calculator->Add(7, 3).ToString();
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
var calculator = new WinRTComponentCpp.Calculator();
this.AddResultTextBox.Text =
calculator.Add(4, 45).ToString();
}
document.getElementById('CppResult').textContent =
WinRTComponentCpp.Calculator().add(5, 7);
Provides simple and well-designed .NET APIs specifically
tailored for development of Windows Store apps
#include <iostream>
using namespace std;
using namespace Platform;
int main(Array<String^>^ args)
{
String^ message = "Hello World!";
wcout << message->Data() << endl;
return 0;
}
int main(void);
int main();
int main(int argc, char** argv);
int main(int argc, char* argv[]);
namespace CppCx
{
ref class MyRefClass sealed
{};
ref struct MyRefStruct sealed
{};
value class MyValueClass sealed
{};
value struct MyValueStruct sealed
{};
interface struct IMyInterface
{};
}
namespace LearningCppCx
{
ref class Foo sealed
{
internal:
Foo(Foo%other)
{
Console::WriteLine(__FUNCTION__"(Foo%);");
Data = other.Data;
}
public:
Foo(Foo^ other)
{
Console::WriteLine(__FUNCTION__"(Foo^);");
Data = other->Data;
}
Foo()
{
Console::WriteLine(__FUNCTION__"();");
}
void Print()
{
Console::WriteLine(Data);
}
property int Data;
private:
~Foo()
{
Console::WriteLine(__FUNCTION__"();");
}
};
}
[MTAThread]
int main()
{
using namespace LearningCppCx;
Console::WriteLine("-- One --");
Foo^ one = ref new Foo();
one->Data = 42;
Console::WriteLine("-- Two --");
Foo^ two = ref new Foo(one);
Console::WriteLine("-- Three --");
Foo^ three = ref new Foo();
three = one;
Console::WriteLine("-- Four --");
Foo^ four(one);
Console::WriteLine("-- Five --");
Foo five(*one);
return 0;
}
ref class MyRefClass sealed
{};
ref struct MyRefStruct sealed
{};
value class MyValueClass sealed
{};
value struct MyValueStruct sealed
{};
using namespace Platform;
value class Foo
{
public:
int Value;
};
[MTAThread]
int main()
{
// instanciando um value type;
Foo number;
number.Value = 34;
// boxing por atribuição
Object^ boxed = number;
// unboxing por cast
Foo unboxed = safe_cast<Foo>(boxed);
return 0;
}
namespace BoxingDemo
{
public ref class Class1 sealed
{
public:
Class1(){}
Platform::IBox<int>^ Multiply(Platform::IBox<int>^ a, Platform::IBox<int>^ b)
{
if(a == nullptr || b == nullptr)
return nullptr;
else
return ref new Platform::Box<int>(a->Value * b->Value);
}
};
}
interface class IFoo
{
void A();
void B();
};
interface class IA { void F(); };
interface class IB { void F(); };
ref class C : IA, IB
{
public:
virtual void F1() = IA::F
{};
virtual void F2() = IB::F
{};
}
interface IFoo
{
void DoSomething();
};
ref class Foo : IFoo
{
virtual void DoSomething() = IFoo::DoSomething
{}
}
[MTAThread]
int main()
{
auto f = ref new Foo();
IFoo^ if = f;
f->DoSomething(); // BOOM;
if->DoSomething(); // Funciona
return 0;
}
ref class Foo
{
Platform::String _name;
public:
property Platform::String^ Name
{
Platform::String^ get()
{ return _name; }
void set(Platform::String^ value)
{ _name = value; }
}
};
namespace CppCxDelegates
{
ref class Foo;
public delegate String^ GetNameDelegate(Foo^ f);
[MTAThread]
int main()
{
using namespace CppCxDelegates;
auto instance = ref new Foo("Elemar");
public ref class Foo sealed
{
String^ _name;
public:
Foo() {}
auto ldelegate = ref new GetNameDelegate(
[](Foo^ f){ return f->Name; }
);
auto lstr = ldelegate(instance);
wcout << lstr->Data() << endl;
Foo(String^ name)
{ _name = name; }
return 0;
property String^ Name
{
String^ get()
{
return _name;
}
}
};
}
}
Platform::String^ Name
{
void set(Platform::String^ value)
{
if (value->IsEmpty())
{
throw ref new Platform::InvalidArgumentException();
}
_name = value;
}
Platform::String^ get()
{
return _name;
}
}
#include <amp.h>
#include <iostream>
int main()
{
using namespace std;
using namespace concurrency;
int a_data[] = {1, 2, 3, 4, 5};
int b_data[] = {6, 7, 8, 9,10};
int sum_data[5];
array_view<const int, 1> a(5, a_data);
array_view<const int, 1> b(5, b_data);
array_view<int, 1> sum(5, sum_data);
sum.discard_data();
parallel_for_each(sum.extent, [=] (index<1> i) restrict(amp) {
sum[i] = a[i] + b[i];
});
for (int i = 0; i < 5; i++)
cout << sum[i] << "... ";
return 0;
}
Obrigado!
http://elemarjr.net
@elemarjr
facebook.com/elemarjr
github.com/elemarjr
[email protected]