// TryTaskbar.cpp : 定义应用程序的入口点。//#include "stdafx.h"#include "TryTaskbar.h"//至此，上面提到的所有功能都已实现。有几个头文件需要包含到程序中： #include <shobjidl.h> #include <dwmapi.h> #include <tchar.h> #include <strsafe.h> #include <GdiPlus.h> //编译时需要链接的库有：dwmapi.lib gdiplus.lib#pragma comment(lib,"dwmapi.lib")#pragma comment(lib,"gdiplus.lib")#define MAX_LOADSTRING 100UINT WM_TASKBARBUTTONCREATED;//用户消息ITaskbarList4 *g_pTaskbar;HICON g_hRed, g_hGreen, g_hBlue;HWND g_hWnd;// 全局变量:HINSTANCE hInst;// 当前实例TCHAR szTitle[MAX_LOADSTRING];// 标题栏文本TCHAR szWindowClass[MAX_LOADSTRING];// 主窗口类名// 此代码模块中包含的函数的前向声明:ATOMMyRegisterClass(HINSTANCE hInstance);BOOLInitInstance(HINSTANCE, int);LRESULT CALLBACKWndProc(HWND, UINT, WPARAM, LPARAM);INT_PTR CALLBACKAbout(HWND, UINT, WPARAM, LPARAM);int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow){UNREFERENCED_PARAMETER(hPrevInstance);UNREFERENCED_PARAMETER(lpCmdLine); // TODO: 在此放置代码。//初始化GDI+ULONG_PTR token;Gdiplus::GdiplusStartupInput input;Gdiplus::GdiplusStartup(&token, &input, NULL);//加载图标资源g_hRed = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_RED));g_hGreen = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_GREEN));g_hBlue = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_BLUE));//注册用户消息//注册用户消息 WM_TASKBARBUTTONCREATED = :: RegisterWindowMessage (TEXT ("TaskbarButtonCreated" )); MSG msg;HACCEL hAccelTable;// 初始化全局字符串LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);LoadString(hInstance, IDC_TRYTASKBAR, szWindowClass, MAX_LOADSTRING);MyRegisterClass(hInstance);// 执行应用程序初始化:if (!InitInstance (hInstance, nCmdShow)){return FALSE;}hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_TRYTASKBAR));//设置窗口属性，打开自定义缩略图和AeroPeek预览BOOL truth = TRUE;DwmSetWindowAttribute(g_hWnd, DWMWA_HAS_ICONIC_BITMAP, &truth, sizeof(truth));DwmSetWindowAttribute(g_hWnd, DWMWA_FORCE_ICONIC_REPRESENTATION, &truth, sizeof(truth));// 主消息循环:while (GetMessage(&msg, NULL, 0, 0)){if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)){TranslateMessage(&msg);DispatchMessage(&msg);}}//UnregisterClass(TEXT("ClsTestTaskbar"), GetModuleHandle(NULL));UnregisterClass(szWindowClass, GetModuleHandle(NULL));//关闭GDI+Gdiplus::GdiplusShutdown(token);return (int) msg.wParam;}//// 函数: MyRegisterClass()//// 目的: 注册窗口类。//// 注释://// 仅当希望// 此代码与添加到 Windows 95 中的“RegisterClassEx”// 函数之前的 Win32 系统兼容时，才需要此函数及其用法。调用此函数十分重要，// 这样应用程序就可以获得关联的// “格式正确的”小图标。//ATOM MyRegisterClass(HINSTANCE hInstance){WNDCLASSEX wcex;wcex.cbSize = sizeof(WNDCLASSEX);wcex.style= CS_HREDRAW | CS_VREDRAW;wcex.lpfnWndProc= WndProc;wcex.cbClsExtra= 0;wcex.cbWndExtra= 0;wcex.hInstance= hInstance;wcex.hIcon= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_TRYTASKBAR));wcex.hCursor= LoadCursor(NULL, IDC_ARROW);wcex.hbrBackground= (HBRUSH)(COLOR_WINDOW+1);wcex.lpszMenuName= MAKEINTRESOURCE(IDC_TRYTASKBAR);wcex.lpszClassName= szWindowClass;wcex.hIconSm= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));return RegisterClassEx(&wcex);}//// 函数: InitInstance(HINSTANCE, int)//// 目的: 保存实例句柄并创建主窗口//// 注释://// 在此函数中，我们在全局变量中保存实例句柄并// 创建和显示主程序窗口。//BOOL InitInstance(HINSTANCE hInstance, int nCmdShow){ HWND &hWnd=g_hWnd; hInst = hInstance; // 将实例句柄存储在全局变量中 hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE;}void AddThumbnailButtons() {if(g_pTaskbar == NULL) return;//buttonsTHUMBBUTTONMASK dwMask = THB_ICON | THB_TOOLTIP;THUMBBUTTON thbButtons[3];thbButtons[0].dwMask = dwMask;thbButtons[0].iId = 0;thbButtons[0].hIcon = g_hRed;StringCbCopy(thbButtons[0].szTip, sizeof(thbButtons[0].szTip), TEXT("Red"));thbButtons[1].dwMask = dwMask;thbButtons[1].iId = 1;thbButtons[1].hIcon = g_hGreen;StringCbCopy(thbButtons[1].szTip, sizeof(thbButtons[1].szTip), TEXT("Green"));thbButtons[2].dwMask = dwMask;thbButtons[2].iId = 2;thbButtons[2].hIcon = g_hBlue;StringCbCopy(thbButtons[2].szTip, sizeof(thbButtons[2].szTip), TEXT("Blue"));g_pTaskbar->ThumbBarAddButtons(g_hWnd, ARRAYSIZE(thbButtons), thbButtons);}void OnThumbnailButtonClicked( int id ) {switch(id){case 0:SetForegroundWindow(g_hWnd);MessageBox(g_hWnd, TEXT("Red button clicked!"), NULL, MB_OK);break;case 1:SetForegroundWindow(g_hWnd);MessageBox(g_hWnd, TEXT("Green button clicked!"), NULL, MB_OK);break;case 2:SetForegroundWindow(g_hWnd);MessageBox(g_hWnd, TEXT("Blue button clicked!"), NULL, MB_OK);break;}}//将PNG等格式的资源加载为GdiPlus::BitmapGdiplus::Bitmap *LoadBitmapFromResource( HMODULE hModule, UINT resID, LPCTSTR resType ){//分配一块内存，把加载的资源拷贝到内存中//取得资源的句柄HRSRC hRsrc = FindResource(hModule, MAKEINTRESOURCE(resID), resType);if (hRsrc == NULL) {return NULL;}//资源的大小int size = SizeofResource(GetModuleHandle(NULL), hRsrc);//加载资源HGLOBAL hGlobal = LoadResource(GetModuleHandle(NULL), hRsrc);if (hGlobal == NULL){return NULL;}//分配相同大小的一块内存HGLOBAL hGlobal2 = GlobalAlloc(GMEM_MOVEABLE, size);if(hGlobal2 == NULL){FreeResource(hGlobal);return NULL;}//锁资源LPVOID lpVoid = LockResource(hGlobal);if (lpVoid == NULL){FreeResource(hGlobal);GlobalFree(hGlobal2);return NULL;}//锁内存LPVOID lpVoid2 = GlobalLock(hGlobal2);if (lpVoid2 == NULL){UnlockResource(hGlobal);FreeResource(hGlobal);GlobalFree(hGlobal2);return NULL;}//将资源拷贝到内存memcpy(lpVoid2, lpVoid, size);//解锁GlobalUnlock(hGlobal2);UnlockResource(hGlobal);//创建流LPSTREAM lpStream;HRESULT hr = CreateStreamOnHGlobal(hGlobal2, TRUE, &lpStream);if (hr != S_OK){FreeResource(hGlobal);GlobalFree(hGlobal2);return NULL;}//基于流创建GdiPlus::BitmapGdiplus::Bitmap *bmp = Gdiplus::Bitmap::FromStream(lpStream);//释放资源和内存FreeResource(hGlobal);GlobalFree(hGlobal2);return bmp;}//缩放GdiPlua::BitmapGdiplus::Bitmap * ResizeBitmap( Gdiplus::Bitmap *bmpSrc, int destWidth, int destHeight, bool keepAspect = true ){//取得源图片宽度和高度int srcWidth = bmpSrc->GetWidth();int srcHeight = bmpSrc->GetHeight();//计算横向和纵向的缩放比率float scaleH = (float)destWidth / srcWidth;float scaleV = (float)destHeight / srcHeight;//如果需要保持长宽比，则横向和纵向统一采用较小的缩放比率if(keepAspect){if (scaleH > scaleV){scaleH = scaleV;}else{scaleV = scaleH;}}//计算目标宽高destWidth = (int)(srcWidth * scaleH);destHeight = (int)(srcHeight * scaleV);//创建目标BitmapGdiplus::Bitmap *bmpDest = new Gdiplus::Bitmap(destWidth, destHeight, PixelFormat32bppARGB);Gdiplus::Graphics graphic(bmpDest);//设置插值算法graphic.SetInterpolationMode(Gdiplus::InterpolationModeHighQualityBicubic);//将源图像绘制到目标图像上graphic.DrawImage(bmpSrc, Gdiplus::Rect(0, 0, destWidth, destHeight), 0, 0, srcWidth, srcHeight, Gdiplus::UnitPixel);graphic.Flush();return bmpDest;}void OnSendThumbnail( HWND hWnd, int width, int height ) {//将资源加载为BitmapGdiplus::Bitmap *bmp = LoadBitmapFromResource(GetModuleHandle(NULL), IDB_THUMB, TEXT("PNG"));//缩放BitmapGdiplus::Bitmap *bmpResized = ResizeBitmap(bmp, width, height, true);//取得位图句柄HBITMAP hbmp;bmpResized->GetHBITMAP(UINT(Gdiplus::Color::AlphaMask), &hbmp); //发送位图句柄DwmSetIconicThumbnail(hWnd, hbmp, 0);//释放对象DeleteObject(hbmp);delete bmpResized;delete bmp;}void OnSendPreview( HWND hWnd ) {//取得窗口客户区域RECT rcClient;GetClientRect(hWnd, &rcClient);//将资源加载为BitmapGdiplus::Bitmap *bmp = LoadBitmapFromResource(GetModuleHandle(NULL), IDB_PREVIEW, TEXT("PNG"));Gdiplus::Bitmap *bmpResized = ResizeBitmap(bmp, rcClient.right - rcClient.left,rcClient.bottom - rcClient.top, false);//取得位图句柄HBITMAP hbmp;bmpResized->GetHBITMAP(UINT(Gdiplus::Color::AlphaMask), &hbmp); //发送位图句柄DwmSetIconicLivePreviewBitmap(hWnd, hbmp, NULL, 0);//释放对象DeleteObject(hbmp);delete bmpResized;delete bmp;}//// 函数: WndProc(HWND, UINT, WPARAM, LPARAM)//// 目的: 处理主窗口的消息。//// WM_COMMAND- 处理应用程序菜单// WM_PAINT- 绘制主窗口// WM_DESTROY- 发送退出消息并返回////LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){int wmId, wmEvent;PAINTSTRUCT ps;HDC hdc;//创建接口对象ITaskbarListif(message == WM_TASKBARBUTTONCREATED){::CoCreateInstance(CLSID_TaskbarList, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&g_pTaskbar));g_pTaskbar->HrInit();g_pTaskbar->SetProgressState(g_hWnd, TBPF_ERROR);g_pTaskbar->SetProgressValue(g_hWnd, 50, 100);g_pTaskbar->SetOverlayIcon(g_hWnd, g_hRed, TEXT("Error"));g_pTaskbar->SetThumbnailTooltip(g_hWnd, TEXT("Some information"));AddThumbnailButtons();}switch (message){case WM_COMMAND:wmId = LOWORD(wParam);wmEvent = HIWORD(wParam);if (HIWORD(wParam) == THBN_CLICKED){OnThumbnailButtonClicked(LOWORD(wParam));}else // 分析菜单选择:switch (wmId){case IDM_ABOUT:DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);break;case IDM_EXIT:DestroyWindow(hWnd);break;default:return DefWindowProc(hWnd, message, wParam, lParam);}break;case WM_PAINT:hdc = BeginPaint(hWnd, &ps);// TODO: 在此添加任意绘图代码...EndPaint(hWnd, &ps);break;case WM_DESTROY:PostQuitMessage(0);break;case WM_DWMSENDICONICTHUMBNAIL:OnSendThumbnail(hWnd, HIWORD(lParam), LOWORD(lParam));break;case WM_DWMSENDICONICLIVEPREVIEWBITMAP:OnSendPreview(hWnd);break;default:return DefWindowProc(hWnd, message, wParam, lParam);}return 0;}// “关于”框的消息处理程序。INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){UNREFERENCED_PARAMETER(lParam);switch (message){case WM_INITDIALOG:return (INT_PTR)TRUE;case WM_COMMAND:if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL){EndDialog(hDlg, LOWORD(wParam));return (INT_PTR)TRUE;}break;}return (INT_PTR)FALSE;}
