Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,749 questions
0 answers
NT Heap free list split mechanics
I am trying to develop my own Heap for an IoT platform, which is supposed to be an equivalent to the NT heap of Windows for my Masters degree. Does the allocator do anything special when it comes to chunk split from free-lists? In which cases the…
asked 2025-03-19T11:51:33.7433333+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(105.60000000000001, 32%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EE%3C/text%3E%3C/svg%3E)
ElonButNotMusk
0
Reputation points
edited a comment 2025-03-19T12:22:28.3266667+00:00
Viorel
120.5K
Reputation points
1 answer
Does UI Automation handle the Narrator "dismiss" gesture?
I'm creating a UIA provider in C++ for Narrator and would like to support any dismiss actions (if they exist). In the Narrator guide it says "Triple-tap with two fingers - Dismiss context menus (imitating the Escape key)". Does this mean the…
asked 2025-03-11T02:20:34.5366667+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(252.8, 35%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ER%3C/text%3E%3C/svg%3E)
rebeccab
0
Reputation points
commented 2025-03-19T08:19:25.8733333+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
34,101
Reputation points Microsoft External Staff
0 answers
content dialog with points
This is what is happening I have an application, where you can draw on a line on a Canvas, and convert those lines in STL, and then save it on your computer private const string NanoFlowFolder = "NanoFlow"; private const int…
asked 2025-03-08T19:54:20.94+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(115.19999999999999, 28.999999999999996%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EEG%3C/text%3E%3C/svg%3E)
Eduardo Gomez Romero
1,335
Reputation points
commented 2025-03-19T03:32:43.6766667+00:00
Junjie Zhu - MSFT
20,921
Reputation points Microsoft External Staff
0 answers
Formatting rules for an HTTP cookie to bypass PPP authentication
Dear, I would like to know more about the possibility to bypass PPP authentication with an HTTP cookie, as described in [MS-SSTP]. ClientHTTPCookie: In this string variable, the SSTP layer stores the HTTP cookie that will be passed to the HTTPS layer…
asked 2025-03-11T17:24:28.0533333+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(192, 65%, 28%)' 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)
TVB
0
Reputation points
commented 2025-03-19T02:54:43.23+00:00
Jeanine Zhang-MSFT
11,181
Reputation points Microsoft External Staff
1 answer
RegisterPointerInputTarget(hwnd,PT_TOUCH) returns ERROR_ACCESS_DENIED
RegisterPointerInputTarget(hwnd,PT_TOUCH) returns ERROR_ACCESS_DENIED,Here is my C++ code: int APIENTRY wWinMain(In HINSTANCE hInstance, In_opt HINSTANCE hPrevInstance, In LPWSTR lpCmdLine, …
![](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, 69%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3E11%3C/text%3E%3C/svg%3E)
1 answer
Restrict ciphers in WinINet during HTTP call
I have an application and I am using WinINet to make HTTP requests with TLS 1.2. However, I have noticed that WinINet is selecting weak cipher suites, specifically ECDHE-RSA-AES128-SHA256 and ECDHE-RSA-AES128-SHA, for secure connections. Since WinINet…
asked 2025-03-17T16:44:32.43+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(150.4, 64%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPR%3C/text%3E%3C/svg%3E)
Preethi Ravi
60
Reputation points
answered 2025-03-18T01:58:55.3866667+00:00
Jeanine Zhang-MSFT
11,181
Reputation points Microsoft External Staff
3 answers
One of the answers was accepted by the question author.
If a child control covers the parent window's client area completely, why they both receive the WM_PAINT message?
Today I found that If a child window covers its parent window completely, then swipe (slide) the main window to the one side of the screen (cut by the edge of the screen), then swipe back, they both receive a WM_PAINT message. Since the child window…
asked 2022-04-22T09:28:21.233+00:00
燕鹏 李
301
Reputation points
answered 2025-03-17T05:57:02.4066667+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, 3%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECS%3C/text%3E%3C/svg%3E)
Cooks Simple Painting Inc
0
Reputation points
1 answer
One of the answers was accepted by the question author.
Documentation for Earliest Versions of Direct3D
I am wondering if the original documentation for the earliest versions of Direct3D are available anywhere on the Internet? I already have the https://learn.microsoft.com/en-us/windows/win32/classic-directx-graphics link which provides documentation as…
asked 2025-03-13T20:42:16.23+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(268.8, 4%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMA%3C/text%3E%3C/svg%3E)
Matthew Armshaw
61
Reputation points
accepted 2025-03-14T23:15:14.8366667+00:00
Matthew Armshaw
61
Reputation points
1 answer
One of the answers was accepted by the question author.
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
40
Reputation points
accepted 2025-03-13T07:45:44.6166667+00:00
Chau Dang Ba
40
Reputation points
2 answers
Where is windows.h in windows SDK
"Include" folder of Windows SDK(https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk/) does not contain "windows.h" header. Where it is?
asked 2020-11-12T09:49:46.323+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, 23%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EIK%3C/text%3E%3C/svg%3E)
Ivan Kotov
1
Reputation point
commented 2025-03-11T14:24:18.6733333+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, 20%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMY%3C/text%3E%3C/svg%3E)
Milton Yarberry
0
Reputation points
0 answers
Where has windows::Win32::Foundation::BOOL been moved to?
https://crates.io/crates/windows version: 0.60.0 error[E0432]: unresolved import `windows::Win32::Foundation::BOOL` --> src\window\setup.rs:32:20 | 32 | Foundation::{BOOL, HWND}, | ^^^^ no `BOOL` in…
![](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(166.4, 3%, 26%)' 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)
1 answer
Using Arrays with Unions or Structures Not Working
I'm trying to use arrays, with CheckFeatureSupport, rather than check each feature with separate code. I am using different types of elements, so I have to use either union or struct. The problems I am having, is the array of the struct does not point to…
asked 2025-03-08T03:02:37.23+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(22.400000000000002, 4%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EC8%3C/text%3E%3C/svg%3E)
CDev-8220
240
Reputation points
commented 2025-03-11T06:27:33.6633333+00:00
Jeanine Zhang-MSFT
11,181
Reputation points Microsoft External Staff
1 answer
One of the answers was accepted by the question author.
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)
1 answer
One of the answers was accepted by the question author.
How to fix "HRESULT:0x80070578 Invalid window" exception when calling store service function RequestPurchaseAsync() in a Win32 app packed as MSIX package
I'm packing a Win32 app coded by C++ into a MSIX package and trying to publish at Microsoft app store. My app has in-app products to let users purchase. The app is coded in classic Win32 API in C++ and the in-app purchase module is coded by Windows…
asked 2025-03-05T03:30:52.17+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(22.400000000000002, 72%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHW%3C/text%3E%3C/svg%3E)
Hongkun Wang
20
Reputation points
commented 2025-03-05T15:02:51.3566667+00:00
Hongkun Wang
20
Reputation points
2 answers
strsafe functions performance
hi strsafe.h functions do more checks to do string operations so I think standard string functions is faster is this correct? or should I use strsafe functions? thanks
![](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, 24%, 40%)' 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)
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
commented 2025-03-04T21:40:55.7066667+00:00
Simon Fonteneau
75
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
11,181
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
11,181
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.
5,821 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.
2,749 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