Taskbar icon appears blank (possibily due to a sticky cache)
I am having some issues with invalidating the Windows icon cache. I'm running a Win32 app that used to show the taskbar icon properly, however, after replacing the app's icon, the taskbar icon appears blank. It's interesting because when I use ALT-TAB, the correct icon does show up.
The window is created with WS_EX_APPWINDOW. I know it registers the correct icon because after pinning/unpinning it from the taskbar, the icon shows up as expected. I’ve gone through several attempts to solve this and have narrowed it down to refreshing the icon cache.
A few of the ways I tried to reset the icon cache:
- Delete all icon cache files in folder:
%LOCALAPPDATA%/Microsoft/Windows/Explorer/, and restartexplorer.exe
- In Command Prompt:
$ie4uinit.exe -show
- Using Shell APIs to force the taskbar to refresh (
SHChangeNotify)
Having gone through several different attempts and configuration techniques, the taskbar icon remains blank as shown above. I was wondering if there is another foolproof technique for resetting the Windows icon cache.
c++ windows winforms winapi
asked Nov 19 '18 at 19:44
OmerOmer
261320
|
show 1 more comment
I am having some issues with invalidating the Windows icon cache. I'm running a Win32 app that used to show the taskbar icon properly, however, after replacing the app's icon, the taskbar icon appears blank. It's interesting because when I use ALT-TAB, the correct icon does show up.
The window is created with WS_EX_APPWINDOW. I know it registers the correct icon because after pinning/unpinning it from the taskbar, the icon shows up as expected. I’ve gone through several attempts to solve this and have narrowed it down to refreshing the icon cache.
A few of the ways I tried to reset the icon cache:
- Delete all icon cache files in folder:
%LOCALAPPDATA%/Microsoft/Windows/Explorer/, and restartexplorer.exe
- In Command Prompt:
$ie4uinit.exe -show
- Using Shell APIs to force the taskbar to refresh (
SHChangeNotify)
Having gone through several different attempts and configuration techniques, the taskbar icon remains blank as shown above. I was wondering if there is another foolproof technique for resetting the Windows icon cache.
c++ windows winforms winapi
asked Nov 19 '18 at 19:44
OmerOmer
261320
Restart the machine
– David Heffernan
Nov 19 '18 at 19:46
It's a bug in Windows, has always been there, nothing you can do about it.
– Jonathan Potter
Nov 19 '18 at 19:47
@DavidHeffernan Did try to restart, more than once. It didn't help.
– Omer
Nov 19 '18 at 20:00
@JonathanPotter do you know if it has it been reported or referenced somewhere?
– Omer
Nov 19 '18 at 20:03
Are you setting the icon viaNOTIFYICONDATA? Can you show you us the code?
– Pedro LM
Nov 19 '18 at 20:24
|
show 1 more comment
I am having some issues with invalidating the Windows icon cache. I'm running a Win32 app that used to show the taskbar icon properly, however, after replacing the app's icon, the taskbar icon appears blank. It's interesting because when I use ALT-TAB, the correct icon does show up.
The window is created with WS_EX_APPWINDOW. I know it registers the correct icon because after pinning/unpinning it from the taskbar, the icon shows up as expected. I’ve gone through several attempts to solve this and have narrowed it down to refreshing the icon cache.
A few of the ways I tried to reset the icon cache:
- Delete all icon cache files in folder:
%LOCALAPPDATA%/Microsoft/Windows/Explorer/, and restartexplorer.exe
- In Command Prompt:
$ie4uinit.exe -show
- Using Shell APIs to force the taskbar to refresh (
SHChangeNotify)
Having gone through several different attempts and configuration techniques, the taskbar icon remains blank as shown above. I was wondering if there is another foolproof technique for resetting the Windows icon cache.
c++ windows winforms winapi
asked Nov 19 '18 at 19:44
OmerOmer
261320
I am having some issues with invalidating the Windows icon cache. I'm running a Win32 app that used to show the taskbar icon properly, however, after replacing the app's icon, the taskbar icon appears blank. It's interesting because when I use ALT-TAB, the correct icon does show up.
The window is created with WS_EX_APPWINDOW. I know it registers the correct icon because after pinning/unpinning it from the taskbar, the icon shows up as expected. I’ve gone through several attempts to solve this and have narrowed it down to refreshing the icon cache.
A few of the ways I tried to reset the icon cache:
- Delete all icon cache files in folder:
%LOCALAPPDATA%/Microsoft/Windows/Explorer/, and restartexplorer.exe
- In Command Prompt:
$ie4uinit.exe -show
- Using Shell APIs to force the taskbar to refresh (
SHChangeNotify)
Having gone through several different attempts and configuration techniques, the taskbar icon remains blank as shown above. I was wondering if there is another foolproof technique for resetting the Windows icon cache.
c++ windows winforms winapi
c++ windows winforms winapi
asked Nov 19 '18 at 19:44
OmerOmer
261320
asked Nov 19 '18 at 19:44
OmerOmer
261320
asked Nov 19 '18 at 19:44
OmerOmer
261320
asked Nov 19 '18 at 19:44
OmerOmer
261320
asked Nov 19 '18 at 19:44
OmerOmer
261320
261320
Restart the machine
– David Heffernan
Nov 19 '18 at 19:46
It's a bug in Windows, has always been there, nothing you can do about it.
– Jonathan Potter
Nov 19 '18 at 19:47
@DavidHeffernan Did try to restart, more than once. It didn't help.
– Omer
Nov 19 '18 at 20:00
@JonathanPotter do you know if it has it been reported or referenced somewhere?
– Omer
Nov 19 '18 at 20:03
Are you setting the icon viaNOTIFYICONDATA? Can you show you us the code?
– Pedro LM
Nov 19 '18 at 20:24
|
show 1 more comment
Restart the machine
– David Heffernan
Nov 19 '18 at 19:46
It's a bug in Windows, has always been there, nothing you can do about it.
– Jonathan Potter
Nov 19 '18 at 19:47
@DavidHeffernan Did try to restart, more than once. It didn't help.
– Omer
Nov 19 '18 at 20:00
@JonathanPotter do you know if it has it been reported or referenced somewhere?
– Omer
Nov 19 '18 at 20:03
Are you setting the icon viaNOTIFYICONDATA? Can you show you us the code?
– Pedro LM
Nov 19 '18 at 20:24
Restart the machine
– David Heffernan
Nov 19 '18 at 19:46
Restart the machine
– David Heffernan
Nov 19 '18 at 19:46
It's a bug in Windows, has always been there, nothing you can do about it.
– Jonathan Potter
Nov 19 '18 at 19:47
It's a bug in Windows, has always been there, nothing you can do about it.
– Jonathan Potter
Nov 19 '18 at 19:47
@DavidHeffernan Did try to restart, more than once. It didn't help.
– Omer
Nov 19 '18 at 20:00
@DavidHeffernan Did try to restart, more than once. It didn't help.
– Omer
Nov 19 '18 at 20:00
@JonathanPotter do you know if it has it been reported or referenced somewhere?
– Omer
Nov 19 '18 at 20:03
@JonathanPotter do you know if it has it been reported or referenced somewhere?
– Omer
Nov 19 '18 at 20:03
Are you setting the icon via
NOTIFYICONDATA? Can you show you us the code?– Pedro LM
Nov 19 '18 at 20:24
Are you setting the icon via
NOTIFYICONDATA? Can you show you us the code?– Pedro LM
Nov 19 '18 at 20:24
|
show 1 more comment
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Restart the machine
– David Heffernan
Nov 19 '18 at 19:46
It's a bug in Windows, has always been there, nothing you can do about it.
– Jonathan Potter
Nov 19 '18 at 19:47
@DavidHeffernan Did try to restart, more than once. It didn't help.
– Omer
Nov 19 '18 at 20:00
@JonathanPotter do you know if it has it been reported or referenced somewhere?
– Omer
Nov 19 '18 at 20:03
Are you setting the icon via
NOTIFYICONDATA? Can you show you us the code?– Pedro LM
Nov 19 '18 at 20:24