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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 <shellscalingapi.h>
#include <shobjidl.h>
#include <string.h>
#include <vector>
#include "AppWindow.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();
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;
// Same but for older OS versions that don't support per-monitor v2
PROCESS_DPI_AWARENESS oldDpiAwareness = PROCESS_PER_MONITOR_DPI_AWARE;
std::wstring appId(L"EBWebView.SampleApp");
std::wstring initialUri(L"https://www.bing.com");
if (lpCmdLine && lpCmdLine[0])
{
bool commandLineError = false;
PWSTR nextParam = lpCmdLine;
if (nextParam[0] == L'-')
{
++nextParam;
if (nextParam[0] == L'-')
{
++nextParam;
}
if (_wcsnicmp(nextParam, L"dpiunaware", ARRAYSIZE(L"dpiunaware") - 1) ==
0)
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_UNAWARE;
oldDpiAwareness = PROCESS_DPI_UNAWARE;
}
else if (_wcsnicmp(nextParam, L"dpisystemaware",
ARRAYSIZE(L"dpisystemaware") - 1) == 0)
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_SYSTEM_AWARE;
oldDpiAwareness = PROCESS_SYSTEM_DPI_AWARE;
}
else if (_wcsnicmp(nextParam, L"dpipermonitorawarev2",
ARRAYSIZE(L"dpipermonitorawarev2") - 1) == 0)
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2;
oldDpiAwareness = PROCESS_PER_MONITOR_DPI_AWARE;
}
else if (_wcsnicmp(nextParam, L"dpipermonitoraware",
ARRAYSIZE(L"dpipermonitoraware") - 1) == 0)
{
dpiAwarenessContext = DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE;
oldDpiAwareness = PROCESS_PER_MONITOR_DPI_AWARE;
}
else if (_wcsnicmp(nextParam, L"noinitialnavigation",
ARRAYSIZE(L"noinitialnavigation") - 1) == 0)
{
initialUri = L"";
}
else if (_wcsnicmp(nextParam, L"appid=",
ARRAYSIZE(L"appid=") - 1) == 0)
{
PWSTR appidStart = nextParam + ARRAYSIZE(L"appid=");
size_t len = 0;
while (appidStart[len] && (appidStart[len] != ' '))
++len;
appId = std::wstring(appidStart, len);
}
else if (_wcsnicmp(nextParam, L"initialUri=",
ARRAYSIZE(L"initialUri=") - 1) == 0)
{
PWSTR uriStart = nextParam + ARRAYSIZE(L"initialUri=") - 1;
size_t len = 0;
while (uriStart[len] && (uriStart[len] != ' '))
++len;
initialUri = std::wstring(uriStart, len);
}
else
{
// --edge-webview-switches is a supported switch to pass additional
// command line switches to WebView's browser process.
// For example, adding
// --edge-webview-switches="--remote-debugging-port=9222"
// enables remote debugging for webview.
// And adding
// --edge-webview-switches="--auto-open-devtools-for-tabs"
// causes dev tools to open automatically for the WebView.
commandLineError =
(wcsncmp(nextParam, L"edge-webview-switches",
ARRAYSIZE(L"edge-webview-switches") - 1) != 0) &&
(wcsncmp(nextParam, L"restore",
ARRAYSIZE(L"restore") - 1) != 0);
}
}
else
{
commandLineError = true;
}
if (commandLineError)
{
MessageBox(nullptr,
L"Valid command line "
L"parameters:\n\t-DPIUnaware\n\t-DPISystemAware\n\t-"
L"DPIPerMonitorAware\n\t-DPIPerMonitorAwareV2",
L"Command Line Parameters", MB_OK);
}
}
SetCurrentProcessExplicitAppUserModelID(appId.c_str());
// Call the latest DPI awareness function possible
HMODULE user32 = LoadLibraryA("User32.dll");
auto func = reinterpret_cast<decltype(&SetProcessDpiAwarenessContext)>(
GetProcAddress(user32, "SetProcessDpiAwarenessContext"));
if (func)
{
// Windows 10 1703+: SetProcessDpiAwarenessContext
func(dpiAwarenessContext);
}
else {
HMODULE shcore = LoadLibraryA("Shcore.dll");
auto func = reinterpret_cast<decltype(&SetProcessDpiAwareness)>(
GetProcAddress(shcore, "SetProcessDpiAwareness"));
if (func)
{
// Windows 8.1+: SetProcessDpiAwareness
func(oldDpiAwareness);
}
else if (dpiAwarenessContext != DPI_AWARENESS_CONTEXT_UNAWARE)
{
// Windows 7+: SetProcessDPIAware
SetProcessDPIAware();
}
}
new AppWindow(IDM_CREATION_MODE_WINDOWED, initialUri);
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);
}
}
}
}