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Questions - winapi

What is the last parameter in VirtualProtect used for?

I want to use both VirtualAlloc and VirtualProtect to inject a shellcode into the local process but I can't figure out what is the last argument (lpflOldProtect) and how do I declare it. void fun() { ...
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loaded_dypper

c++

winapi

shellcode

Votes: 0

Answers: 1

Latest Answer

The fourth (last) argument to the VirtualProtect function should be the address of a DWORD variable in which to receive the value of the previous protection flags for the memory block (or, to be exact...
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Adrian Mole

Load font file with Windows api Python

I was looking for a way to load a ttf file and print text with that font. While looking for some information, I found this question: load a ttf font with the Windows API In that question they recommen...
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Dante S.

python

winapi

ctypes

pywin32

Votes: 0

Answers: 1

Latest Answer

I adapted the code from this answer and got the answer! I will put the code below: def add_font_file(file): FR_PRIVATE = 0x10 file = ctypes.byref(ctypes.create_unicode_buffer(file)) f...
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Dante S.

MFGetService doesnt get IMFSimpleAudioVolume on first try

I am playing a mp3 file with windows media foundation and try to set the volume but when i try to get IMFSimpleAudioVolume interface it takes a seemingly random amount of tries to do so. I have got 1 ...
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Positronium

c++

winapi

audio

ms-media-foundation

Votes: 0

Answers: 1

Latest Answer

IMFMediaSession::SetTopology is asynchronous, so you'd want to sync before asking for service. This method is asynchronous. If the method returns S_OK, the Media Session sends an MESessionTopologySet...
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Roman R.

How can two threads execute code inside the same critical section, when this should never happen?

I am analyzing an application crash dump on Windows 7 SP1. I can see two threads that are running code inside the same CRITICAL_SECTION at the time of the crash, including the crashing thread. As far ...
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Sébastien Emond

c++

windows

multithreading

winapi

clr

Votes: 0

Answers: 0

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