Windows Programming

Welcome to the Windows forum in C++.com! In this forum, users can to talk about any topic related to programming in C++ for the Windows platform. Feel free to...

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by JUANDENT

Messages associated with custom control not visible in Class Wizard!

HI, I am using MFC with VS2022. I have a custom control grid and when I create an object of it in a dialog, the possible messages associated with its type ar...

[2 replies] Last: Thank you jonnin. However we can't add notification messages that are ... (by JUANDENT)

by ruzip

Run program and make window active

How do I run a program with win32 context as active? Currently it is always shown as inactive. I already used SetFocus(handle) and still inactive.

[4 replies] Last: Thanks guys. I think this has something to do with parenting a child w... (by ruzip)

by jNc

how to release HDC object

HDC object hwindowDC increase memory,but it must be flushed with destructor tried below DeleteObject(hwindowDC); DeleteDC(hwindowDC); Cancel...

[9 replies] Last: still does not flush memory On line 72 the window dc is released. I.e... (by coder777)

by Kaega2

Setting up Win32 for Mingw

I'm running into a lot of errors when I'm trying to run Win32 program examples. I want to make sure I have everything setup correctly. Most examples online ...

[8 replies] Last: Thank you. It works :-) (by Kaega2)

by gabriel11

How do I design a button?

This function creates two default buttons. void Buttons::send_button(HWND hWnd) { CreateWindow(L"Button", L"Choose File", WS_VISIBLE | WS_CHILD, 53, 315, 1...

[2 replies] Last: I believe you can, instead, register that an image has been clicked an... (by jonnin)

by ElusiveTau

Where to find Win32, COM, MFC, ATL tutorials?

I have to learn windows programming for my job since the code base I currently work with uses MFC and ATL. I've never used them for writing C++ windows apps and...

[6 replies] Last: The "Bible" of Windows API programming: "Programming Windows", Fifth ... (by George P)

by Mobo01

Views are created in SQL Server.

In SQL Server, I'm constructing the view shown below. create view View_CAM as SELECT '5' FUNCTION, getdate() UPLOAD_DATE, 'U' STATUS, NULL INITIATED_DAT...

[1 reply] : I think you have to put some kind of limitation on the subquery, like ... (by jonnin)

by Cyclone

Reading a single byte from file.

Hi, I am having an issue with reading a single byte from a file. I want to read a byte from a file and set a NumericUpDown controls' value to the byte that w...

[4 replies] Last: > What solved the issue was using (unsigned char) in brackets. > hmm ... (by JLBorges)

by LukeProducts

Windows API not working on Win 11

Hello guys, I recently written code to capture an image doing basically: #include "windows.h" #include "vfw.h" #include <cstdio> #pragma com...

[1 reply] : Tested on my PC with Windows 10 and it does not work. I have a bmp fil... (by Geckoo)

by Cyclone

HScrollBar value glitch

Hi, I created a HScrollBar control and set its maxvalue to 255. Changing its value will show the value in a NumericUpDown control. When I scroll to its maximu...

[5 replies] Last: Thanks for the explanation. Hmm that makes sense. (by Cyclone)

by JUANDENT

How to create an MFC custom control in VS2022?

Hi, I need to make an MFC custom control that enables me to draw bidimensional graphs... I am going to start looking in internet but though I also asked for ...

[6 replies] Last: And what about ImGUI? https://github.com/ocornut/imgui https://blog.co... (by Geckoo)

by Cambalinho

win32 - DIBs - can i use the a pixel array(HBITMAP), from 1 HDC, to another HDC(HBITMAP)?

ok.. using the GetCurrentObject() i can get the HBITMAP and the GetObject() give the BIMAP. using once the GetDIBits(), without using the pixels array, from th...

[6 replies] Last: now i can draw a line with a texture.. tomorrow, i will update it for ... (by Cambalinho)

by Cyclone

A Simple way to play a sound on a form?

Hi, just trying to play a sound when the user presses a button. This won't compile. Gives a very long error message which I don't understand mciSendString(...

[6 replies] Last: ... which are now also the same as PTSTR and PCTSTR since Windows move... (by seeplus)

by Geckoo

Random numbers (1,2,3)

Hello. I have no questions today, but I need some explanation about this method so as to generate a random number. I made a little test using this code - an alt...

[52 replies] Last: Good coffee is just wasted on this Pleb and villein. (by George P)

by LukeProducts

How to show an image by a new window by providing char sequence?

Hello guys, in order for me to understand videostreams correctly, i need to know if threre is a way to not save a file into lets say .PNG et ceter and to then...

[3 replies] Last: Just showing pixel data on screen in Windows is dead simple. Basically... (by mbozzi)

by LukeProducts

How to send real time screenshare over tcp windows socket?

Hello all, i just wondered how i could screenshare over a tcp socket connection. I want the client to send real time pictures to the server, which then disp...

[4 replies] Last: It sounds like you want to re-invent VNC 😏 https://en.wikipedia.... (by kigar64551)

by JUANDENT

can we change console output to CP_UTF8 but using only C++ standard?

can we change console output to CP_UTF8 but using only C++ standard instead of windows functions? How do we build the locale to specify UTF8 and then imbue that...

[1 reply] : Already answered in your other thread: https://cplusplus.com/forum/win... (by kigar64551)

by JUANDENT

What is the encoding of CString? (1,2)

CString is a wchar_t based string type; what encoding does it use? how can one translate from CString to std::string? Thanks! Juan

[30 replies] Last: I think this is very platform-specific to Windows and probably can't... (by kigar64551)

by Cambalinho

can i create a texture line?

we can create a HPEN or HBRUSH. but can i create a HPEN from an image?

[4 replies] Last: If I read correctly or ExtCreatePen() function, with LOGBRUSH::lbHatch... (by Cambalinho)

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