1,450 views

CreateProcess in full glory

CreateProcess is a little tricky to use. Thus I write the full example code here so you don’t have to worry.

uses SysUtils, JwaWindows, JwsclStrings;

 

procedure StartApp(const App, Parameters, CurDir : TJwString);

var

  StartupInfo: {$IFDEF UNICODE}TStartupInfoW{$ELSE}TStartupInfoA{$ENDIF};

  ProcInfo : TProcessInformation;

  pEnv : Pointer;

 

  pCurDir,

  pCmdLine : TJwPChar;

begin

  ZeroMemory(@StartupInfo, sizeof(StartupInfo));

  StartupInfo.cb          := SizeOf(StartupInfo);

  StartupInfo.lpDesktop   [...]

246 views

How to get the threads of a process?

Yesterday, I described how to get the process of a window. Today I show you how to obtain the threads of a process.
There are two ways to retrieve all the threads of a foreign process.

Use the Tool Help Library. There is also a sample about enumerating threads. So I am not going to to show [...]

502 views

It is impossible to use SetThreadDesktop and the VCL at the same time because a thread can only show windows on one desktop at a time. However VCL is not written for the use with multiple threads, so there is no way to show Delphi forms of same process on two different desktops. SetThreadDesktop [...]

180 views

How to get the process of a window?

This answer is very easy - just use GetWindowThreadProcessId
JWA declares it as followed:

function GetWindowThreadProcessId(hWnd: HWND; lpdwProcessId: LPDWORD): DWORD; stdcall;

The function returns an identifier (not a handle) and also may set lpdwProcessId to the identifier (again not a handle!) if it is not nil. Be aware that identifiers aren’t handles, so you must not close them [...]

212 views

The people from Microsoft decided that the user has to be in full control over the computer. So there is no assured way to make a program user resistant. She can always use TerminateProcess to forcibly kill the process.

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131 views

The case of the unexplained…

As you maybe already have noted, I use the ProcessExplorer of Mark Russinovich a lot. It is a very powerful tool, that can help you finding out what’s going on in your Windows system…

Processes

Threads

Properties

Handles

Kernel

Bluescreens (WinDbg)

and many more

If you are interested in getting an introduction into the great application, you should watch this video. Mark presents [...]

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