class CTrayIcon
{
private:
public:
NOTIFYICONDATA Nid;
CTrayIcon();
void Create(void);
void Show(void);
void Hide(void);
void Modify(void);
void Kill(void);
};
CTrayIcon::CTrayIcon()
{
Nid.cbSize = (DWORD) sizeof(NOTIFYICONDATA);
Nid.uFlags = (UINT) NIF_ICON | NIF_MESSAGE | NIF_TIP | NIF_STATE | NIF_INFO | NIF_GUID;
Nid.dwState = (DWORD) NIS_SHAREDICON | NIS_HIDDEN;
//Nid.dwStateMask = (DWORD) NIS_SHAREDICON | NIS_HIDDEN;
Nid.uTimeout = (UINT) 10;
//Nid.uVersion = (UINT) NOTIFYICON_VERSION;
Nid.dwInfoFlags = (DWORD) NIIF_INFO; // NIIF_ERROR, NIIF_NON, NIIF_WARNING, NIIF_ICON_MASK, NIIF_NOSOUND
//Nid.guidItem = (GUID) NULL; // Version 6.0. Reserved
}
void CTrayIcon::Create(void)
{
if(!Shell_NotifyIcon(NIM_ADD, &Nid)) DebugTest("Couldn't create the icon.");
}
void CTrayIcon::Show(void)
{
//if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't show the icon.");
}
void CTrayIcon::Hide(void)
{
//if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't hide the icon.");
}
void CTrayIcon::Modify(void)
{
if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't modify the icon.");
}
void CTrayIcon::Kill(void)
{
if(!Shell_NotifyIcon(NIM_DELETE, &Nid)) DebugTest("Couldn't kill the icon.");
}
Hiding and showing a shell notify icon [SOLVED]
Author
Hello, I am working on a system tray icon class for Windows XP, with DevCPP. It all seems to be working. But I got stuck at Hide() and Show() member functions. I have no idea what code to write for them.
Any help will be appreciated.
Author
Just i forgot to write. DebugTest() is a function that is using MessageBox() to inform user about runtime errors.
I just wrote a function like this.
I don't know if this is how you do it really, but I just ADD it to show it and then DELETE it to hide it.
void SysTray(bool enable){ enable ? Shell_NotifyIcon(NIM_ADD, &m_sysTray) : Shell_NotifyIcon(NIM_DELETE, &m_sysTray); }I don't know if this is how you do it really, but I just ADD it to show it and then DELETE it to hide it.
No - adding and deleting are the only known operations. There's no such thing as a tray icon that is added but not displayed.
Author
Then what dwState and dwStateMask fields are for?
When I assign ANY value to dwStateMask, icon creation fails. Have any idea about that?
When I assign ANY value to dwStateMask, icon creation fails. Have any idea about that?
OK, I stand corrected - there is in fact a hidden state. However, it is only available in certain versions of the API (not much of a limitation - anything more recent than Win2000 should have it).
See The Manual for full documentation on the NOTIFYICONDATA structure.
See The Manual for full documentation on the NOTIFYICONDATA structure.
Author
Quote:dwState
Version 5.0. State of the icon. There are two flags that can be set independently.
NIS_HIDDEN
The icon is hidden.
NIS_SHAREDICON
The icon is shared.
dwStateMask
Version 5.0. A value that specifies which bits of the state member are retrieved or modified. For example, setting this member to NIS_HIDDEN causes only the item's hidden state to be retrieved.
Now Hide() works but Show() doesn't. New code is below :
void CTrayIcon::Show(void){ Nid.dwStateMask = NIS_SHAREDICON; if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't show the icon.");}void CTrayIcon::Hide(void){ Nid.dwStateMask = NIS_HIDDEN; if(!Shell_NotifyIcon(NIM_MODIFY, &Nid)) DebugTest("Couldn't hide the icon.");}By the way, about version, I've already defined :
#define _WIN32_IE 0x0600[Edited by - Battousai on September 27, 2006 3:51:22 AM]
I think you need to reread the documentation, carefully. What is the difference between dwState and dwStateMask?
Author
The only thing I found in MSDN is this :
Unfortunately, the documentation doesn't touch on this detail. I searched the web with google but found nothing.
Quote:dwStateIt doesn't make clear usage of dwStateMask.
Version 5.0. State of the icon. There are two flags that can be set independently.
NIS_HIDDEN
The icon is hidden.
NIS_SHAREDICON
The icon is shared.
dwStateMask
Version 5.0. A value that specifies which bits of the state member are retrieved or modified. For example, setting this member to NIS_HIDDEN causes only the item's hidden state to be retrieved.
Unfortunately, the documentation doesn't touch on this detail. I searched the web with google but found nothing.
This topic is closed to new replies.
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