如何实现在任务栏中图标的闪烁

Question

使用vc，如何实现出现在任务栏中的图标可以闪烁，或者换图标，类似qq.

Answer 1

你可以参考 abstractspoon.com 的ToDoList的源代码中有个CTrayIcon类

Answer 2

//任务栏图标窗口的回调函数
LRESULT CALLBACK myboleProc(
  HWND hwnd,        // handle to window
  UINT useMsg,      // message identifier
  WPARAM wParam,    // first message parameter
  LPARAM lParam     // second message parameter
)
{
switch(useMsg)
{
case WM_TIMER:
     
switch(wParam)
{
case 1:
g_iWhichIcon = !g_iWhichIcon;
NOTIFYICONDATA  nid;
nid.cbSize = sizeof( NOTIFYICONDATA );
nid.hWnd = hwnd;
nid.uID = IDI_MYICON;
nid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
nid.uCallbackMessage = WM_SYSTEMTRAY;
nid.hIcon =  ::LoadIcon(g_hInstance,MAKEINTRESOURCE( g_iWhichIcon ?  IDI_MYICON : IDI_MYICON2)  );
strcpy((nid.szTip),"AccessControlService收到控制器发给监控管理模块的数据\n请确认监控管理模块是否已经正常运行");
Shell_NotifyIcon(NIM_MODIFY ,&nid);
break;
case 2:
g_iWhichIcon = !g_iWhichIcon;
NOTIFYICONDATA  nid4;
nid4.cbSize = sizeof( NOTIFYICONDATA );
nid4.hWnd = hwnd;
nid4.uID = IDI_ICON1;
nid4.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
nid4.uCallbackMessage = WM_SYSTEMTRAY;
nid4.hIcon =  ::LoadIcon(g_hInstance,MAKEINTRESOURCE( g_iWhichIcon ?  IDI_ICON1 : IDI_ICON2)  );
strcpy((nid4.szTip),"AccessControlService收到控制器发给物业管理模块的数据\n请确认物业管理模块是否已经正常运行");
Shell_NotifyIcon(NIM_MODIFY ,&nid4);
break;
}
break; // 向任务栏添加图标－监控中心报警
case WM_ADDTRAYICON:
//MessageBox(NULL,"添加图表1的消息","",0 | 0x00200000L);
NOTIFYICONDATA  nid2;
nid2.cbSize = sizeof( NOTIFYICONDATA );
nid2.hWnd   = hTrayIconDlghWnd;
nid2.uID    = IDI_MYICON;
nid2.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
nid2.uCallbackMessage = WM_SYSTEMTRAY;
nid2.hIcon =  ::LoadIcon( g_hInstance,MAKEINTRESOURCE(IDI_MYICON));
strcpy(nid2.szTip,"AccessControlService");
Shell_NotifyIcon(NIM_ADD,&nid2);
SetTimer(hwnd,1,350,NULL);
g_TrayIcon1hascreate = true;
break;

// 向任务栏添加图标2－－物业中心报警
case WM_ADDTRAYICON1:
//MessageBox(NULL,"添加图表2的消息","",0 | 0x00200000L);
NOTIFYICONDATA  nid3;
nid3.cbSize = sizeof( NOTIFYICONDATA );
nid3.hWnd   = hTrayIconDlghWnd;
nid3.uID    = IDI_ICON1;
nid3.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
nid3.uCallbackMessage = WM_SYSTEMTRAY;
nid3.hIcon =  ::LoadIcon( g_hInstance,MAKEINTRESOURCE(IDI_ICON1));
strcpy(nid3.szTip,"AccessControlService物业模块");
Shell_NotifyIcon(NIM_ADD,&nid3);
SetTimer(hwnd,2,250,NULL);
g_TrayIcon2hascreate = true;
break;
   
// 从任务栏删除监控模块图标
    case WM_DELTRAYICON1:
// MessageBox(NULL,"收到删除图表1的消息","",0 | 0x00200000L);
NOTIFYICONDATA  nid1;
nid1.cbSize = sizeof( NOTIFYICONDATA );
nid1.hWnd = hwnd;
nid1.uID = IDI_MYICON;
nid1.uFlags = 0;
Shell_NotifyIcon(NIM_DELETE,&nid1);
::KillTimer(hwnd,1);
g_TrayIcon1hascreate = false;
break; // 从任务栏删除物业模块图标
    case WM_DELTRAYICON2:
//MessageBox(NULL,"收到删除图表2的消息","",0 | 0x00200000L);
NOTIFYICONDATA  nid5;
nid5.cbSize = sizeof( NOTIFYICONDATA );
nid5.hWnd = hwnd;
nid5.uID = IDI_ICON1;
nid5.uFlags = 0;
Shell_NotifyIcon(NIM_DELETE,&nid5);
::KillTimer(hwnd,2);
g_TrayIcon2hascreate = false;
break;

default:
return DefWindowProc(hwnd,useMsg,wParam,lParam);
}
return 0;
}

Answer 3

用两个图标，在定时器中交替LoadIcon

Answer 4

you can use SetTimer() to create WM_TIMER message and replace currently ico in the OnTimer() .you are welcome.....