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4jax_cheater
Cheater
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Joined: 14 Apr 2009
Posts: 31
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 Posted: Tue Aug 02, 2011 1:18 pm Post subject: Delphi Thread DLL creating error inject process |
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Hello, I have a problem with the day, and I've been researching much more I can not find anything, and the next I'm good with a serious problem for the continuation of my project, let's go
the problem and the following dll and inject ..
I am using the following code:
| Code: | | CreateThread (nil, 0, @ FormShow, nil, 0, ThreadId) |
is working perfectly .. inject form, but when I create a form in new thread to use a function of the access violation
thread creation code error form:
| Code: | METhread function (P: Pointer): LongInt;
begin
function
end;
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using:
| Code: |
var
hThreadID: THandle;
ThreadID: DWord;
begin
{Creates the thread, where @ is the MinhaThread created Function Pointer}
hThreadID: = CreateThread (nil, 0, @ METhread, nil, 0, ThreadID); |
and this problem when I create a new thread to use a function without the access violation crashes someone knows how to solve?
thanks
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Dark Byte
Site Admin
 Reputation: 471
Joined: 09 May 2003
Posts: 25859
Location: The netherlands
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| Posted: Tue Aug 02, 2011 2:43 pm Post subject: |
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Try that code in a normal application first and make sure you do not have the debugger attached.
Anyhow, one tip: Keep all gui access in one thread, the gui components are not thread safe and if you create a second form in another thread you might be accidentally overwriting some global variables that designate the main thread ID
Because you have injected your dll syncronize will not work, so implement this using postmessage and a procedure that watches that event in the main form, or just don't use another thread
and of course, use showmodal or application.run, just using show will cause the thread to exit
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