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我已經做了兩個簡單的類來用Awesomium顯示UI。但是，創建Awesomium WebView並將父窗口設置爲我的Win32窗口會導致程序掛起，並且從不顯示頁面。這些課程很簡單，創建一個窗口很簡單，所以沒有太多我能想到的可能會出錯。也許有什麼比我已經做了顯示一個WebView所需要的東西？Awesomium WebView不顯示頁面
澄清：在不創建WebView的情況下創建Win32窗口可以正常工作，窗口函數包括拖動代碼等......只有當您調用set_parent_window時纔會發生掛起。
UI.h
#pragma once
#include <Windows.h>
#include <windowsx.h>
#include <Awesomium/WebCore.h>
#include <Awesomium/STLHelpers.h>
using namespace Awesomium;
LRESULT CALLBACK LoginUICallback(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
class UI
{
public:
//Window Variables
HINSTANCE instance;
HWND window;
BOOL drag_window = false;
SHORT mouse_x, mouse_y, mouse_x_prev, mouse_y_prev;
//Awesomium Variables
WebCore* webcore = 0;
WebView* webview;
static HWND InitWindow(INT width, INT height, WNDPROC callback)
{
HWND hwnd;
WNDCLASSEX wc;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = callback;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = GetModuleHandle(0);
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wc.lpszMenuName = NULL;
wc.lpszClassName = "MyUI";
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if (!RegisterClassEx(&wc))
{
char msg[100];
sprintf(msg, "System Error: %i", GetLastError());
MessageBox(NULL, msg, "ERROR", MB_OK);
return NULL;
}
hwnd = CreateWindow("MyUI",
"",
WS_POPUP,
CW_USEDEFAULT,
CW_USEDEFAULT,
width,
height,
NULL,
NULL,
GetModuleHandle(0),
NULL);
if (!hwnd)
{
char msg[100];
sprintf(msg, "System Error: %i", GetLastError());
MessageBox(NULL, msg, "ERROR", MB_OK);
return NULL;
}
ShowWindow(hwnd, SW_SHOWNORMAL);
UpdateWindow(hwnd);
SetTimer(hwnd, 0, 15, NULL);
return hwnd;
}
};
class LoginUI : public UI
{
public:
INT width = 600;
INT height = 600;
INT RunUI()
{
this->window = UI::InitWindow(this->width, this->height, ::LoginUICallback);
if (!this->window)
return 0;
WebConfig config;
this->webcore = WebCore::Initialize(config);
this->webview = this->webcore->instance()->CreateWebView(this->width, this->height, 0, kWebViewType_Window);
this->webview->set_parent_window(this->window);
this->webview->LoadURL(WebURL(WSLit("http://www.google.com")));
MSG msg;
while(GetMessage(&msg, this->window, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
WebCore::Shutdown();
return 1;
}
}login_ui;
LRESULT CALLBACK LoginUICallback(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_COMMAND:
return DefWindowProc(hWnd, message, wParam, lParam);
break;
case WM_TIMER:
break;
case WM_MOUSEMOVE:
{
if (login_ui.drag_window && (wParam & MK_LBUTTON))
{
// code executed when the dialog window is moved around on the screen
RECT win_rect;
GetWindowRect(hWnd, &win_rect);
int x_coord = GET_X_LPARAM(lParam);
int y_coord = GET_Y_LPARAM(lParam);
MoveWindow(hWnd,
win_rect.left + x_coord - login_ui.mouse_x_prev,
win_rect.top + y_coord - login_ui.mouse_y_prev,
win_rect.right - win_rect.left,
win_rect.bottom - win_rect.top,
false
);
}
break;
}
case WM_LBUTTONDOWN:
{
login_ui.mouse_x = GET_X_LPARAM(lParam);
login_ui.mouse_y = GET_Y_LPARAM(lParam);
if (login_ui.mouse_y < 41)
{
login_ui.mouse_x_prev = login_ui.mouse_x;
login_ui.mouse_y_prev = login_ui.mouse_y;
SetCapture(hWnd);
login_ui.drag_window = true;
}
break;
}
case WM_LBUTTONUP:
{
if (login_ui.drag_window)
{
login_ui.drag_window = false;
ReleaseCapture();
}
break;
}
case WM_SIZE:
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_QUIT:
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
Main.cpp的
#include "UI.h"
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE, char*, int nCmdShow)
{
login_ui.RunUI();
}