Windows API - Win32 - Microsoft Q&A

2 answers

Perfomance counter and instance names

Hi! Are there any api functions to map process id with its instance name in the following performance categories without using counter "\process\id process" process http service request queues asp.net applications https…

asked

Oleg Gussak 1

commented

Rita Han - MSFT 2,161

0 answers

AccessCheck() and MoveFileEx() doesn't work with network mapped driver

Hi We have a NAS installed locally and mapped a folder as local driver letter, such W . Here uses credential from NAS to establish the mapping from NAS folder to local driver letter, not from Windows Active Directory. And user account is local. Any…

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Bo Zhou 1

commented

Rita Han - MSFT 2,161

0 answers

WINPE 20H1 print screen capture doesn't capture all

Can someone help me. I have a capture program it can capture all window(cmd window) in winpe 19H2, but winpe 20H1 fail as picture. winpe boot into cmd window. I use below code to capture window desktop all window. I try to change…

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103 1

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Drake Wu - MSFT 991

0 answers

Is there any way to create a virtual Speaker or Mic in C#?

And then the final Speaker/Mic can be specified through the api. Or I should ask, what is more reasonable to describe the technology or product that can do this?

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Victor Chen 106

commented

DaisyTian-1203 11,616

0 answers

c++ load dll from resource directly

I want load dll from resource. Unfortunately I can only find examples for load dll with unpack the dll in to disk and then load it from LoadLibrary. But I want load it directly from memory if possible. How to do that? FindResource and LoadResource load…

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Code Wanderer 396

commented

RLWA32 40,471

4 answers

Force keyboard in digits mode

Hello, with my team we are developing a C++ Windows application which is based on Qt library for the UI part and on Win32 API for the rest. The minimum Windows version supported is Windows 8.1. In the application there are some text fields which…

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charles edouard vidoine 96

commented

charles edouard vidoine 96

1 answer

IMFDXGIBuffer interface not found

IMFDXGIBuffer interface is missing on Windows Server 2016. I have installed "Media Foundation" feature, but the problem still exists. Also latest DirectX is installed.. What could cause this issue?

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iz111 86

accepted

iz111 86

1 answer

direct2d resizing the geometry without scale, how to?

Hello I am playing with Direct2D, I was read tutorials (or how to) and documentation from microsoft site, but I still can't find info, how to resize a geometry. For example in this sample is show how is ellipse created and resized with mouse. I want…

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Code Wanderer 396

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Darran Rowe 561

0 answers

Why are all my threads being momentarily paused?

Hi, I've been struggling with this for weeks. I have several audio threads in my application (they all have high priorities in the 20's from the multimedia class scheduler service). They are often held up for long periods of time (100ms, 300ms, even…

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PlatypusPotato 1

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Carl 1

0 answers

Windows V2004 causes our app to show &#34;You&#39;ll need a new app to open this ms-gamingoverlay link&#34;

Now that Windows 10 v2004 is out, I have reports that our desktop application starts up and then the user is presented with a message: "You'll need a new app to open this ms-gamingoverlay link" Unfortunately I don't have access to this OS due…

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Holland, RD (DI SW ME PRD SDE AS) 31

commented

Holland, RD (DI SW ME PRD SDE AS) 31

1 answer

Is it possible to create a simple drop shadow using GDI+ Blur?

I'm displaying bitmaps, and I'd like to add a simple drop shadow to them (like the way Explorer does in the preview pane). I figured out how to do it with Direct2D, but that was sort of overkill, so I was wondering if there's a simpler way to do it…

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loop123123 1

commented

Rita Han - MSFT 2,161

1 answer

CryptUIWizDigitalSign locks a file if it fails

Hi! I have a problem using the CryptUIWizDigitalSign-Function in C#. If I pass a file via CRYPTUI_WIZ_DIGITAL_SIGN_INFO-Structure that cannot be signed (i.e. Text-File), the function fails. But if i try to delete the file after the failure, the file is…

asked

Alexnbg72 1

answered

Viorel 112.5K

2 answers

KEYDOWN in COMBOBOX does not work

I need to have access to the KEYDOWN event in all the visual controls of the window, and in the instructions indicated on the next page: https://learn.microsoft.com/en-us/windows/win32/controls/subclass-a-combo-box Everything works, except that…

asked

Daniel de Dios El Ignorado 1

commented

Rita Han - MSFT 2,161

1 answer

How can I check whether a certificate is CA or end entity?

Want to confirm the cert type CA or End Entity, before it is imported to the certificate store. Is there any utility function available for this. I have written the below function. But it returns always return the cert as CA. Is this have a bug or is…

asked

Vishnu Gopalakrishnan 126

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Vishnu Gopalakrishnan 126

1 answer

How to use bitmap for a three state check box with OBM_CHECKBOXES.

Hello, I want to use three state checkbox in the list control. Today, there is facility for normal checkbox. The bitmap for normal check box are loaded from OBM_CHECKBOXES. The problem is, I am not able to find the bitmap image for intermediate…

asked

Rahul Mendke 1

answered

Rita Han - MSFT 2,161

1 answer

Magnifier Control unable to magnify the taskbar start menu

I've modified the MagnifierSample from the Windows-classic-samples, turning it into a lens magnifier. However when I open the Start Menu by pressing the Start button my magnification lens window is pushed to the background and is unable to magnify the…

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Johannes Bergman 41

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Johannes Bergman 41

1 answer

Increasing Private Bytes but constant Virtual Bytes and Working Set. Genuine Memory Leak?

Hello everyone, We have developed a desktop server application which is written in C++. After running this application for 24hours, we could notice the following changes in memory usage(data collected through Perfmon). As per the…

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Vinay Kumar L 21

commented

Rita Han - MSFT 2,161

3 answers

Can I subclass the same parent window HWND several times

In case positive, is there a penalty in performance due to this? I want to use this so each child window can process its own parent notifications. For example, a Listview subclass its parent window and process LVN_ITEMCHANGED, LVN_COLUMNCLICK, ect. An…

asked

Fernando Gabriel 1

answered

RLWA32 40,471

2 answers

Bluetoothleapis.h and Manufacturer specific data

Hello, I am using the C API for Bluetooth Low Energy. https://learn.microsoft.com/en-us/windows/win32/api/bluetoothleapis/ I would like to retrieve the Manufacturer specific data from the advertising packets, similar to what you can do in…

asked

Jean Simonet 1

commented

Rita Han - MSFT 2,161

1 answer

Want to warn when i use the same symbol defined two another library when link

I have below case: I add below code in testa.c file. extern unsigned char globaltest; void a() { if (globaltest == 3) { globaltest = 4; } } Define test lib1.lib and lib2.lib and define globaltest in those lib. Link testa.obj lib1.lib…

asked

Jiang, Guomin 1

answered

Darran Rowe 561

Windows API - Win32

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2,424 questions with Windows API - Win32 tags

Perfomance counter and instance names

AccessCheck() and MoveFileEx() doesn't work with network mapped driver

WINPE 20H1 print screen capture doesn't capture all

Is there any way to create a virtual Speaker or Mic in C#?

c++ load dll from resource directly

Force keyboard in digits mode

IMFDXGIBuffer interface not found

direct2d resizing the geometry without scale, how to?

Why are all my threads being momentarily paused?

Windows V2004 causes our app to show &#34;You&#39;ll need a new app to open this ms-gamingoverlay link&#34;

Is it possible to create a simple drop shadow using GDI+ Blur?

CryptUIWizDigitalSign locks a file if it fails

KEYDOWN in COMBOBOX does not work

How can I check whether a certificate is CA or end entity?

How to use bitmap for a three state check box with OBM_CHECKBOXES.

Magnifier Control unable to magnify the taskbar start menu

Increasing Private Bytes but constant Virtual Bytes and Working Set. Genuine Memory Leak?

Can I subclass the same parent window HWND several times

Bluetoothleapis.h and Manufacturer specific data

Want to warn when i use the same symbol defined two another library when link