Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,739 questions
0 answers
createfilemapping size constraints
What is the maximum size that can be used with CreateFileMapping with INVALID_HANDLE_VALUE and SEC_RESERVE, for a virtual paged memory backed file, on windows 11 with 32 gb physical memory I can specify for example 64 gb but on windows 2016 it seems…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(99.2, 4%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EG%3C/text%3E%3C/svg%3E)
0 answers
How to improve image quality when painting images with Gdiplus::TextureBrush
I am currently having a problem with broken image drawing when I use Gdiplus::TextureBrush. I know that when drawing images with Graphics::DrawImage, the image still maintains the image quality. But I need to draw images with Gdiplus::TextureBrush…
asked 2025-03-03T08:06:39.73+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(307.2, 39%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECD%3C/text%3E%3C/svg%3E)
Chau Dang Ba
10
Reputation points
commented 2025-03-04T07:26:41.6866667+00:00
Chau Dang Ba
10
Reputation points
0 answers
Load DLL Error: "SXS: BasepCreateActCtx() Calling csrss server failed. Status = 0xc000004b"
My program (NSIS Installer) crashed due to shell32.dll delay loading dui70.dll failed. After confirming, the dui70.dll file was not missing and I found the error message: SXS: BasepCreateActCtx() Calling csrss server failed. Status = 0xc000004b. More…
asked 2025-03-03T11:03:27.75+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(246.4, 78%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EL%3C/text%3E%3C/svg%3E)
LZL
0
Reputation points
commented 2025-03-04T01:29:10.6633333+00:00
Jeanine Zhang-MSFT
10,866
Reputation points Microsoft External Staff
2 answers
One of the answers was accepted by the question author.
Why does IPsecSaContextSetSpi0 from the WFP API seem to only accept even SPI values?
When creating an IPsec SA using the WFP API, IpsecSaContextSetSpi0() doesn't seem to accept an odd SPI value. Why is this the case? RFC 4303 Section 2.1 and RFC 4302 Section 2.4 talk about valid SPI values for an IPsec SA. It makes no mention of odd…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(176, 21%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EN%3C/text%3E%3C/svg%3E)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(281.6, 56.00000000000001%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EV%3C/text%3E%3C/svg%3E)
0 answers
How to get the path of the selected file in the current tab of Windows Explorer?
The end goal: • Open Explorer (multiple tabs) in win11. • Select a file • Press the space bar to get the selected file path in your own program
asked 2025-02-28T11:29:23.1966667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(176, 24%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJS%3C/text%3E%3C/svg%3E)
john snow
0
Reputation points
commented 2025-03-03T01:38:38.5366667+00:00
Jeanine Zhang-MSFT
10,866
Reputation points Microsoft External Staff
0 answers
why uiautomation findFirst is slow and can i correct it?
Hello, I want to find some ui elements in windows apps but when i find it using uiautomation findAll or findFirst it slows down programs. I undertand that there are many elements in ui and it requires going throug many elements but for example in…
Windows
Windows
A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.
5,817 questions
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,739 questions
asked 2025-01-25T14:19:43.4133333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(230.39999999999998, 92%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Артур Абубакиров
0
Reputation points
commented 2025-02-28T05:40:15.29+00:00
Артур Абубакиров
0
Reputation points
5 answers
WSUSSCN2.cab file for Windows 11
I have been using a the wsusscn2.cab file and WUA in a script for years to determine the latest non-superseded applicable UpdatesIDs so that I can download them and bring them to my offline networks. Now that we are moving to Windows 11 it seems to me…
asked 2024-06-13T15:51:07.07+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 95%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
ArmoredEmu01
5
Reputation points
commented 2025-02-26T18:40:07.71+00:00
ArmoredEmu01
5
Reputation points
0 answers
Speech Recognition customize engine question on Windows about sapi
Hi MSFT member, On windows, when developing a Speech recognition app, there are about three solution APIs: Windows.Media.SpeechRecognition System.Speech Programming Guide for .NET Framework Microsoft Speech API (SAPI) Since We want to use local…
asked 2025-02-25T12:29:16.58+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(256, 26%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECZ%3C/text%3E%3C/svg%3E)
clark-zh
40
Reputation points
commented 2025-02-26T03:38:00.27+00:00
Jeanine Zhang-MSFT
10,866
Reputation points Microsoft External Staff
0 answers
Why does EnumDisplayMonitors Still Return just Disconnected Monitor
I'm working om win32 Desktop application in CPP and I'm checking what happens if I try to fetch Display info with EnumDisplayMonitors when All displays are disconnected! Surprisingly it is giving display info of previously connected Display. Why is this…
asked 2025-02-11T06:48:09.9366667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 44%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EH%3C/text%3E%3C/svg%3E)
Harshithraj1871
1,621
Reputation points
commented 2025-02-25T05:47:53.6766667+00:00
Harshithraj1871
1,621
Reputation points
1 answer
Why SetWindowCompositionAttribute makes text also transparent
When I called SetWindowCompositionAttribute to make the main window blurred, text of controls on it also became transparent and thus hard to read. I want to keep the text pure black without transparency while the main window is blurred and transparent.…
asked 2025-02-03T03:24:51.68+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(227.2, 17%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
szx0427
101
Reputation points
edited the question 2025-02-24T08:06:12.22+00:00
Jack J Jun
24,881
Reputation points Microsoft External Staff
1 answer
How to make a RichEdit control resizable in the up and down directions?
// RichEditReSizeable_cpp_win32.cpp : Defines the entry point for the application. // #include "framework.h" #include "RichEditReSizeable_cpp_win32.h" #define MAX_LOADSTRING 100 #ifndef MSFTEDIT_CLASS #define MSFTEDIT_CLASS…
asked 2025-02-02T01:29:39.93+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(118.4, 0%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECM%3C/text%3E%3C/svg%3E)
Cristoforo Montanari
0
Reputation points
edited a comment 2025-02-21T06:18:05.01+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 92%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERL%3C/text%3E%3C/svg%3E)
Roy Li - MSFT
34,096
Reputation points Microsoft External Staff
0 answers
DirectComposition click through in transparent areas
I have an application with DirectComposition and Direct2D that I do have a window bigger than the drawings to handle somethings like shadows underneath the rectangles. The issue that I'm having is in the transparent areas, the click-through is not…
asked 2025-01-31T22:57:11.4266667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(102.4, 93%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EVH%3C/text%3E%3C/svg%3E)
Vitor Hugo Gomes
0
Reputation points
edited a comment 2025-02-21T06:17:48.8033333+00:00
Roy Li - MSFT
34,096
Reputation points Microsoft External Staff
1 answer
In C++, are global objects guaranteed to exist throughout the execution of a SetConsoleCtrlHandler() callback function?
In C++, are global objects guaranteed to exist throughout the execution of a SetConsoleCtrlHandler() callback function? I'm wondering what would happen if both regular program execution (and the eventual destruction of global variables) and the…
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,739 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,868 questions
asked 2025-02-05T01:22:18.9666667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(198.4, 9%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGH%3C/text%3E%3C/svg%3E)
Geoff Hale
0
Reputation points
edited a comment 2025-02-21T06:17:15.0633333+00:00
Roy Li - MSFT
34,096
Reputation points Microsoft External Staff
2 answers
Failed to disable Peek Preview in Windows 11
Hi, everyone! To implement some custom fetatures I need to disable peek preview for the window. So I call DwmSetWindowAttribute with DWMWA_DISALLOW_PEEK set to True to disallow peek preview. It works well in Win7 and Win10 but in my newest…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(313.6, 25%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ET%3C/text%3E%3C/svg%3E)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(230.39999999999998, 86%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EH%3C/text%3E%3C/svg%3E)
4 answers
IUpdate2::CopyToCache method Windows 11
It seems that this method no longer works on Windows 11: https://learn.microsoft.com/en-us/windows/win32/api/wuapi/nf-wuapi-iupdate2-copytocache Interface not registered Do you have an idea?
asked 2024-12-12T12:09:00.7133333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(99.2, 84%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESF%3C/text%3E%3C/svg%3E)
Simon Fonteneau
75
Reputation points
answered 2025-02-20T08:05:46.9866667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(236.8, 26%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EFM%3C/text%3E%3C/svg%3E)
Friese, Manuela
0
Reputation points
1 answer
How do I force a python script to run in efficiency mode so the green leaf appears next to its' listing in TaskManager?
Hi all, as the title states, I'm looking to make a python script run in efficiency mode and it has to show the leaf in TaskManager so psutils is out (right?). I'm running cmd as administrator and I've tried using ctypes to throttle the power through…
asked 2025-02-08T01:30:45.95+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(163.2, 57.99999999999999%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
Matt_the_ok
0
Reputation points
answered 2025-02-19T18:09:15.4566667+00:00
Matt_the_ok
0
Reputation points
2 answers
One of the answers was accepted by the question author.
CComboBoxEx in dark mode (with Dropdown style) in MFC
I am trying to implement a dark mode for my application, by using DarkMode_Explorer / DarkMode_CFD etc. I have handled OnCtlColor and set the theme using SetWindowTheme. If my CComboBoxEx is a DropList then it renderings properly. But when I set it to…
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,739 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,868 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(252.8, 83%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EC%3C/text%3E%3C/svg%3E)
0 answers
How to apply ROPs (Raster Operation) when drawing with GDI+ and do we need to use ROPs with GDI+?
I am doing drawing image to EMF file using GDI+ however I don't see any function of GDI+ related to ROPs. I understand that GDI+ is designed with object oriented thinking and supports high quality graphics. So do we need ROPs when using GDI+?
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,739 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,868 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
10,906 questions
asked 2025-02-07T02:22:18.55+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(99.2, 90%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELN%3C/text%3E%3C/svg%3E)
lam nguyen
0
Reputation points
commented 2025-02-19T06:20:05.1233333+00:00
Roy Li - MSFT
34,096
Reputation points Microsoft External Staff
2 answers
One of the answers was accepted by the question author.
ndfapi.dll's NdfRunDllDiagnoseWithAnswerFile and NetworkDiagnosticsSharing API call Description
Good Day! I have been searching online regarding the API calls NdfRunDllDiagnoseWithAnswerFile and NetworkDiagnosticsSharing but the results were being pointed to **NdfDiagnoseIncident function (ndfapi.h) **which i am not sure if this is the updated…
Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
13,729 questions
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,739 questions
Windows Network
Windows Network
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.Network: A group of devices that communicate either wirelessly or via a physical connection.
837 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(272, 28.000000000000004%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECA%3C/text%3E%3C/svg%3E)
3 answers
Does win32 PostMessage and GetMessage use release acquire fencing?
I've been looking ALL over for this information explicitly, but I can not find anything documented. Does PostMessage and GetMessage internally implement or behave like they implement atomic release acquire fencing? Specifically, does PostMessage release…
asked 2025-02-12T04:04:12.5433333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(73.60000000000001, 20%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJB%3C/text%3E%3C/svg%3E)
Jim Bean
0
Reputation points
commented 2025-02-14T22:52:59.6166667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(262.40000000000003, 13%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDR%3C/text%3E%3C/svg%3E)
Darran Rowe
1,426
Reputation points