Hard > Process Explorer & Tool tips

Thanks for replying Slick,  I will try to explain some more

For example in Delphi, you hold the mouse over a component on the pallete and a tooltips shows with the name of the component, this program would catch that handle,  It would then not find Delphi.exe as its parent handle (which suprised me?), it would report the ProcID as that of Delphi.  And then I suppose unsuprisingly the above function based on ProcID would report that the tooltip handle had not been closed, and hence the tooltip's entry in my process explorer would not be deleted.

A work around for this problem which your reply promted was to remove all windows from the list for which
GetWindowText(hWnd, TextBuf, SizeOf(TextBuf)); returns TextBuf as empty.  However this is far from perfect since it also removes processes such as explorer.exe    So my origonal question returns, is there a way of telling from its handle a tooltip from a 'real' application ?  Also it would appear that the above CheckAlive function is flawed, how do I check if a handle still exists ?

David

to see if a "Handle" of a window still is registered as a "Window" in the windows session  (if the window still exists) you can simply call

function IsWindow(
     hWnd: HWND;       // handle of window
   ): BOOL;


 = = = = =

you say -

 "It would then not find Delphi.exe as its parent handle"

I do not quite understand this? ?
I beleive the parent handle would be the

Application.Handle

for a delphi THint. . .  (which I do NOT beleive is a system  "ToolTip" window). .

As far as I know a Process (a program like Delphi.exe) does not have a Window Handle, however it does have a Process Handle, I beleive.
Not sure of your reference to a "Handle" in
 "It would then not find Delphi.exe as its parent handle"

I beleive I may (or may not) have some code to get the window's process ID (or process handle)  from a window's handle, but I am guessing this is what you may be going for here?

oh, I have no Idea if a system Tool tip (not a delphi THint window) will be in a system process or in the application process?

Sorry for not explain very well, this is still all new to me.

>for a delphi THint. . .  (which I do NOT beleive is a system  "ToolTip" window). .
yes sorry, I am getting the names confused

The IsWindow Function is useful and detects when the tooltip (not a Thint ;)) has gone,

>>oh, I have no Idea if a system Tool tip (not a delphi THint window) will be in a system process or in the application process?
could you explain I do not understand

>> I beleive I may (or may not) have some code to get the window's process ID (or process handle)  from a window's handle
I already have code to get the ProcessID from a handle.   Are the ProcessID and process handle different ? could you define them?

I use CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); to get a list of all processes by thier handles.
What I mean by "It would then not find Delphi.exe as its parent handle" was that from this list, the handle of the Thint within delphi would not return any parent handle using this code GetWindowLong(processlis[C].Handle, GWL_HWNDPARENT);  
I agree that the parent handle for a Thint should logicaly be the form or appication that generated it, yet (and this is the problem) GetWindowLong(processlis[C].Handle, GWL_HWNDPARENT);   returns 0 ?  

David

Sorry for not explain very well, this is still all new to me.

>for a delphi THint. . .  (which I do NOT beleive is a system  "ToolTip" window). .
yes sorry, I am getting the names confused

The IsWindow Function is useful and detects when the tooltip (not a Thint ;)) has gone,

>>oh, I have no Idea if a system Tool tip (not a delphi THint window) will be in a system process or in the application process?
could you explain I do not understand

>> I beleive I may (or may not) have some code to get the window's process ID (or process handle)  from a window's handle
I already have code to get the ProcessID from a handle.   Are the ProcessID and process handle different ? could you define them?

I use CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); to get a list of all processes by thier handles.
What I mean by "It would then not find Delphi.exe as its parent handle" was that from this list, the handle of the Thint (within delphi) would not return any parent handle using this code GetWindowLong(processlis[C].Handle, GWL_HWNDPARENT);  
I agree that the parent handle for a Thint should logicaly be the form or appication that generated it (eg delphi), yet (and this is the problem) GetWindowLong(processlis[C].Handle, GWL_HWNDPARENT);   returns 0 ?  

David

Basicaly I am after some way of taking out all Thints, tooltips and hints which are from CSRSS.exe from a Toolhelp32Snapshot  I assumed that they would all show thier 'parents' to be within an application (eg a form or even the application is self or for a tooltip explorer.exe) and so would not be shown (I exclude everything with a parent so I only get the 'top level' handle) however the code used to find the parent handle returns 0

Instead of using the parents handle, I would get the window's text  - GetWindowText(  ) -  and get the windows Class Name and then see if there is some  "Common" attibute, like mabe all  CSRSS.exe  tool tip windows have the same window text and window class name ? and the THintWindow may also have a common text and class name

the process handle and Process ID are 2 different things, although they are the same for each process, some system functions take a process ID, and others take a process handle, you can get a process ID from a process handle, and vice versa, I beleive. . .

Thanks slick, that sounds like a good plan, how do I get the windows Class Name  ?

var
TextBuf: Array[Byte] of Char;



GetClassName(hWnd, TexrBuf, SizeOf(TextBuf));

nope that returns empty for both Hints & tooltips