Movewindow vs setwindowpos

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Movewindow vs setwindowpos

What are the real differences between them? There are many closely-related concepts involved, and related terms are often misused, even in the official documentation.

movewindow vs setwindowpos

The main window for an application is almost always a top-level window. It does not have anything to do with z-order. Their position is always relative to the parent widow's area.

Child windows are often "controls": UI things like buttons and edit boxes. Top-level windows often have children.

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But note that child windows may also have children and thus be both parent and child windows. An example is a floating tool palette: it's owned by another window in the application, but it's not locked to that other window's area. The active window is typically drawn with a distinctive border and its tile on the task bar is highlighted.

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The active window is usually at or near to the top of the z-order among all other top-level windows, and it is the parent or owner perhaps indirectly of the window with keyboard focus. Conceptually, there is one window with keyboard focus. Often the window with focus is a child or grandchild, etc. The name seems to suggest that it's at the top of the z-order, but it really means that the thread that created the window gets a slight priority boost. That active window is usually also the foreground window.

So let's say you've got this browser window open, and you've also got an instance of Notepad running. If you click on the document in Notepad, a whole flurry of messages and state changes occur. You're actually clicking on a big edit box, which is a child window of Notepad's top-level window.

That click causes the edit box to get activated, but child windows can't really be the "active" window, so it just takes the keyboard focus and passes the activation message up through its ancestors until it gets to a top-level window.

The top-level window "activates" by moving to the top of the z-order, highlighting its border, etc. It also becomes the foreground window, so its thread gets a little boost to make the UI a little more responsive than any other windows.

With these terms in mind, you can parse the MSDN descriptions for the functions you listed to tease out the subtle differences. Note that, in many cases, SetForegroundWindow won't do what you want unless you're the active application or the active application has given you permission to use it. BringWindowToTop is mostly about bringing a window to the top of the z-order which you can do with SetWindowPoswith extra side effects that make it behave like SetForegroundWindow if you call it on a top-level window.

Update: Raymond Chen posted a clearer distinction between the active window and the foreground window. To quote:. Use bringwindowtotop to activate a parent window via the child. They all have their place and obviously have duplicate functionality, but each does things just a little different depending on what you want to do.

Important types of windows: top-level windows : Windows that have no parent window. Important concepts: top of the z-order : This literally means the window that displays above other windows.It seems that MoveWindow function doesn't have any effect on the minimized windows and that is not stated in the MSDN documentation. MSDN documentation about SetWindowPos says that in Vista "hwnd and window manager operations are only effective inside a session and cross-session attempts to manipulate the hwnd will fail" and that statement indicated that problem is because of Vista.

I have added this line of code instead of MoveWindow:. SetWindowPos this. Needless to say that this line of code didn't work for other applications but only for the process owner. Code experts, please help! I am running this code on Vista. This site uses cookies for analytics, personalized content and ads. By continuing to browse this site, you agree to this use. Learn more.

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Visual Studio Languages. NET Framework. Visual C. Sign in to vote. I have an application on Vista which loops through all processes and finds associated main windows in order to move and resize them. The problem is that some windows get moved and resized and some don't.In Windows 7 Microsoft added a feature called AeroSnap. Sure it works fine with a landscape mode x monitor.

What’s the point of the MoveWindow function when we already have SetWindowPos?

It works less well on a monitor in x portrait mode. Or even three x vertical windows if the display is large enough. It solves a simple problem in exactly the way I want. I use it everyday. It may or may not be useful to you. Source Code Binaries. None of them are mindblowing. But the Win32 API is esoteric and painful enough that hopefully some reader will benefit from my suffering.

Define some rectangles and snap applications windows to those rects. Easy right? What do you think happens if you call a MoveWindow 0, 0,? Did you guess place the top-left corner of a window in the top-left corner of a monitor and make it full screen? That sounds reasonable. The top of your window will be along the top-edge of the screen. There is magical padding for… windows drop shadows? Scroll bar selection bounds?

Maybe it made sense back on Windows Replicating this proved to be surprisingly nuanced. You can trivially minimize, maximize, or restore a window via ShowWindowAsync. The problem is when want you restore from maximized AND move in one seamless operation. The solution is to use SetWindowPlacement instead.

This function takes the new bounds and new state at the same time. If you call maximize then move you must update the state to normal. Otherwise Windows will think the window is still maximized and attempts to re-maximize will silently fail.

The upper-right corner icons will reflect this fake-maximized state. This turned out to be a huge pain in the ass. Windows 10 has gotten… slightly better at high-dpi. We previously encountered some unexpected window padding issues.Skip to main content.

Update Available. Select Product Version. All Products. An application can use the SetWindowPos function to add or remove this extended window style. Therefore, when the computer calculates the new z-order position of a non-topmost window, the last topmost window is returned incorrectly. Because of this behavior, non-topmost windows can be displayed above topmost windows. Hotfix information Important This hotfix has been re-released to address an issue in which the digital signature on files produced and signed by Microsoft will expire prematurely, as described in Microsoft Security Advisory A supported hotfix is available from Microsoft.

However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article.

movewindow vs setwindowpos

If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix. Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix.

Version Product Milestone Service branch 6. Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. More Information. For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: Description of the standard terminology that is used to describe Microsoft software updates. File name Update. Last Updated: Oct 10, Forum Windows Programming Sizing window.

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Sep 4, at am UTC. I had created a window that contains several components Edit, List View, Buttons, I need to re-size and rearrange those components upon sizing the window. However, I don't know how and what is the best practice for this. Thanks in advance of your advice and help Regards, Ahmad.

Sep 4, at pm UTC. You hevan't really given enough information If this was news to you, and you want to learn about WinAPI programming, then maybe you should check out Petzold's book, "Programming Windows"?? Programs written using this book run under every version of Windows from Windows 95 through Windows XP and beyond. Knowledge of C is required.

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If, on the other hand, you're using a GUI toolkit, you just might be lucky and have an automatic resizer you can use. You might even be able to find suitable automatic resizing code on the web, I don't know on any that I would trust; but then I've never really looked for it.

Last edited on Sep 4, at pm UTC. Sep 5, at am UTC. Sorry for the lack of information. Anyway, my application is based on win API and I am already handling several window messages.

So those are not new to me. Is there a way to loop over all its children controls in order to get their hWnd to be passed as 1st parameter in SendMessage macro? Last edited on Sep 5, at pm UTC. Sep 11, at am UTC. Thanks for your update. I was confused in among the documentation of SetWindowPos. Anyway, what I am trying to do is to re-size all the controls of the window upon re-sizing the window itself. I don't know which message of the window been re-sized must be processed and what message or macro to use in order to alert all the window's controls Edit, List View, etc of the new size of their parent window so that they will be re-sized as well accordingly.

It would be appreciate if you can summarize the needed steps. Regards, Ahmad. Sorry, but I feel I've provided all the necessary information. See MSDN for further details. Sep 11, at pm UTC. Anyway thanks. I am already referring to MSDN in most of the coding done till now.

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But when I used SetWindowPos, i got really confused by the flags. Programming Windows is a tutorial for programmers wishing to write applications for Windows using the C programming language and the native Win32 application programming interface API.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am wondering if, in order to move a ms-windows- window with the Win32 API 20 px to the right and 40 px downwards, the following function call would be how to do it:.

I ask because it seems to me that there could be a function only taking a HWND and an x and y as parameters. Yes, that's pretty much how it's done. There's also a MoveWindow function that does pretty much the same thing. With the SetWindowPos function available, it's now more of a convenience function than anything else. You mean like MoveWindow? Learn more. Is moving a window with SetWindowPos the 'normal way' to do?

Ask Question. Asked 9 years, 3 months ago. Active 4 years, 1 month ago. Viewed 7k times. Active Oldest Votes. Anders Anders 78k 11 11 gold badges 87 87 silver badges bronze badges.

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In silico In silico Ben Voigt Ben Voigt k 33 33 gold badges silver badges bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Featured on Meta. Community and Moderator guidelines for escalating issues via new response….Also raymond Chen's link that I posted above and the discussion by users to his article will give you enough details on this.

I am surprised with the quality of the answers in this forum lately, as exemplified above. I'm not playing games here. My question remains. I don't think David meant anything more than what he said. Your painting is probably happening so fast that you don't have to bother optimizing it. My question is about a concept. I'm just trying to understand what is the difference between them.

movewindow vs setwindowpos

By reading the docs, I just can't see any difference. It seems to me that there might be some circunstances where one function is more appropriate then the other. That's what I'm trying to find out. I've read the site you suggested before I posted my question.

The answer is not there either.

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When the mainframe is resized, if it iterated over all the various toolbars and resizes each of them using "SetWindowPos", you will definitely see a lot of flashing. Instead if you see the MFC code, it uses the following functions:. I'm not familiar with MFC.

But I can see what you mean by the sentence below. Now it's looking better. I'm used to the Win32 API. So there might be some savings just there.

Could you be more specific, on what DefWindowProc does with this message? This site uses cookies for analytics, personalized content and ads. By continuing to browse this site, you agree to this use. Learn more. Ask a question. Quick access. Search related threads. Remove From My Forums. Answered by:.

MoveWindow function

Visual Studio Languages. Windows Desktop Development. Sign in to vote. Monday, October 4, PM. Tuesday, October 5, AM. Have you read the documentation? Of course my question is about the case when you have more than one child window.

If you can't see any difference in your application, don't worry about it. David, if you don't know the answer, please don't bother me with these silly remarks. Good link, Seetharam Nikita Leontiev.


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