c++ - win32 任务栏进度如何实现？

Question

类似迅雷这种。任务栏上面会显示 下载的进度。
还有鼠标放上去会显示自定义控件是怎么做的？

Answer 1

1. SetProgressValue Method
   http://msdn.microsoft.com/en-us/library/dd391698(VS.85).aspx

2. SetProgressState Method
   http://msdn.microsoft.com/en-us/library/dd391697(VS.85).aspx

Answer 2

In MFC:

1. MSDN - ITaskbarList3 Interface

2. Initialize COM interface

   CoCreateInstance( CLSID_TaskbarList, nullptr, CLSCTX_ALL, __uuidof(ITaskbarList3), (LPVOID*)&m_pTL3 );

3. Registration message

   static const UINT WM_TBC = RegisterWindowMessage(TEXT("TaskbarButtonCreated"));

4. Show status

   m_pTL3->SetProgressState(GetSafeHwnd(), TBPF_ERROR);
   m_pTL3->SetProgressState(GetSafeHwnd(), TBPF_PAUSE);
   m_pTL3->SetProgressState(GetSafeHwnd(), TBPF_NORMAL);

5. Show progress

   m_pTL3->SetProgressValue(GetSafeHwnd(), 50, 100);

6. Release

   m_pTL3->Release();
   m_pTL3 = nullptr;

Answer 3

This can be achieved using QWinExtra.
pro file added: QT += winextra.
Refer to the four classes QWinTaskbarButton, QWinTaskbarProgress, QWinThumbnailToolBar, and QWinThumbnailToolButton.
You can refer to winextra/music player in Qt Examples.