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App.cpp
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// Copyright (C) Microsoft Corporation. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "stdafx.h"
#include "App.h"
#include <map>
#include <shellapi.h>
#include <shellscalingapi.h>
#include <shobjidl.h>
#include <string.h>
#include <vector>
#include "AppWindow.h"
#include "DpiUtil.h"
HINSTANCE g_hInstance;
int g_nCmdShow;
bool g_autoTabHandle = true;
static std::map<DWORD, HANDLE> s_threads;
static int RunMessagePump();
static DWORD WINAPI ThreadProc(void* pvParam);
static void WaitForOtherThreads();
#define NEXT_PARAM_CONTAINS(command) \
_wcsnicmp(nextParam.c_str(), command, ARRAYSIZE(command) - 1) == 0
int APIENTRY wWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
PWSTR lpCmdLine,
int nCmdShow)
{
g_hInstance = hInstance;
UNREFERENCED_PARAMETER(hPrevInstance);
g_nCmdShow = nCmdShow;
// Default DPI awareness to PerMonitorV2. The commandline parameters can
// override this.
DPI_AWARENESS_CONTEXT dpiAwarenessContext =
DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2;
std::wstring appId(L"EBWebView.SampleApp");
std::wstring initialUri;
DWORD creationModeId = IDM_CREATION_MODE_WINDOWED;
if (lpCmdLine && lpCmdLine[0])
{
int paramCount = 0;
LPWSTR* params = CommandLineToArgvW(lpCmdLine, ¶mCount);
for (int i = 0; i < paramCount; ++i)
{
std::wstring nextParam;
if (params[i][0] == L'-')
{
if (params[i][1] == L'-')
{
nextParam.assign(params[i] + 2);
}
else
{
nextParam.assign(params[i] + 1);
}
}
if (NEXT_PARAM_CONTAINS(L"dpiunaware"))
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_UNAWARE;
}
else if (NEXT_PARAM_CONTAINS(L"dpisystemaware"))
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_SYSTEM_AWARE;
}
else if (NEXT_PARAM_CONTAINS(L"dpipermonitorawarev2"))
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2;
}
else if (NEXT_PARAM_CONTAINS(L"dpipermonitoraware"))
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE;
}
else if (NEXT_PARAM_CONTAINS(L"noinitialnavigation"))
{
initialUri = L"none";
}
else if (NEXT_PARAM_CONTAINS(L"appid="))
{
appId = nextParam.substr(nextParam.find(L'=') + 1);
}
else if (NEXT_PARAM_CONTAINS(L"initialUri="))
{
initialUri = nextParam.substr(nextParam.find(L'=') + 1);
}
else if (NEXT_PARAM_CONTAINS(L"creationmode="))
{
nextParam = nextParam.substr(nextParam.find(L'=') + 1);
if (NEXT_PARAM_CONTAINS(L"windowed"))
{
creationModeId = IDM_CREATION_MODE_WINDOWED;
}
else if (NEXT_PARAM_CONTAINS(L"visualdcomp"))
{
creationModeId = IDM_CREATION_MODE_VISUAL_DCOMP;
}
else if (NEXT_PARAM_CONTAINS(L"targetdcomp"))
{
creationModeId = IDM_CREATION_MODE_TARGET_DCOMP;
}
#ifdef USE_WEBVIEW2_WIN10
else if (NEXT_PARAM_CONTAINS(L"visualwincomp"))
{
creationModeId = IDM_CREATION_MODE_VISUAL_WINCOMP;
}
#endif
}
}
LocalFree(params);
}
SetCurrentProcessExplicitAppUserModelID(appId.c_str());
DpiUtil::SetProcessDpiAwarenessContext(dpiAwarenessContext);
new AppWindow(creationModeId, initialUri, true);
int retVal = RunMessagePump();
WaitForOtherThreads();
return retVal;
}
// Run the message pump for one thread.
static int RunMessagePump()
{
HACCEL hAccelTable =
LoadAccelerators(g_hInstance, MAKEINTRESOURCE(IDC_WEBVIEW2APISAMPLE));
MSG msg;
// Main message loop:
//! [MoveFocus0]
while (GetMessage(&msg, nullptr, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
// Calling IsDialogMessage handles Tab traversal automatically. If the
// app wants the platform to auto handle tab, then call IsDialogMessage
// before calling TranslateMessage/DispatchMessage. If the app wants to
// handle tabbing itself, then skip calling IsDialogMessage and call
// TranslateMessage/DispatchMessage directly.
if (!g_autoTabHandle || !IsDialogMessage(GetAncestor(msg.hwnd, GA_ROOT), &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
//! [MoveFocus0]
DWORD threadId = GetCurrentThreadId();
auto it = s_threads.find(threadId);
if (it != s_threads.end())
{
CloseHandle(it->second);
s_threads.erase(threadId);
}
return (int)msg.wParam;
}
// Make a new thread.
void CreateNewThread(UINT creationModeId)
{
DWORD threadId;
HANDLE thread = CreateThread(
nullptr, 0, ThreadProc, reinterpret_cast<LPVOID>(creationModeId),
STACK_SIZE_PARAM_IS_A_RESERVATION, &threadId);
s_threads.insert(std::pair<DWORD, HANDLE>(threadId, thread));
}
// This function is the starting point for new threads. It will open a new app window.
static DWORD WINAPI ThreadProc(void* pvParam)
{
new AppWindow(reinterpret_cast<UINT>(pvParam));
return RunMessagePump();
}
// Called on the main thread. Wait for all other threads to complete before exiting.
static void WaitForOtherThreads()
{
while (!s_threads.empty())
{
std::vector<HANDLE> threadHandles;
for (auto it = s_threads.begin(); it != s_threads.end(); ++it)
{
threadHandles.push_back(it->second);
}
HANDLE* handleArray = threadHandles.data();
DWORD dwIndex = MsgWaitForMultipleObjects(
static_cast<DWORD>(threadHandles.size()), threadHandles.data(), FALSE,
INFINITE, QS_ALLEVENTS);
if (dwIndex == WAIT_OBJECT_0 + threadHandles.size())
{
MSG msg;
while (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
}