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Member 15212768 wrote: What's the point in `base = timeGetTime() & 0xffff0000` line?
To avoid being too close to rollover point. From "timeGetTime function | Microsoft Docs"[^]:
Quote: The return value wraps around to 0 every 2^32 milliseconds, which is about 49.71 days. This can cause problems in code that directly uses the timeGetTime return value in computations, particularly where the value is used to control code execution. You should always use the difference between two timeGetTime return values in computations.
Mircea
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Thanks to parallel processing these days you can feed in your game loop a constant value as time variable. (there is no fluctuation between frames as far as time is concerned). You should care about Frame Rate Independent movement only if you`re developing a game meant to hit the store shelf.
modified 5-Jun-22 2:07am.
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Hello!, this is my first post on this forum and i'm trying to understand how this works, so if this is not the proper way of asking for help or this is in the wrong subforum just let me know please!
I'm currently studying App Development, and as sort of a "final project" to pass the course, me and my group have to make a proyect that tracks both users and their data consumption.
Since we're restricted to using codeblocks and c language, I wanted to get some insight on how to improve the visual aspect of the cmd, and user experience overall.
I havent found many content of this kind online so any tutorial or explainatory about this subject would be very helpfull, since we havent been taught too much about this side of the coding, and I think this will be a great adition to the proyect, and learning experience overall.
Thanks!
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Thanks for answering!
The project has to be fully working on our teacher's computer, so no plugins or external libraries are allowed, whatever resources we can use has to be already installed on CodeBlocks, GNU Compiler vanilla version. Also this is our first proyect so any tips on this matter would be wellcomed  .
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Sorry, but without some actual problem details there is nothing much we can offer.
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This seems like a question that should be easy to find an answer to, but I'm not finding anything very convenient...
What I will want to do with this, is to be able to right-click on a folder in Explorer, and have an item "run my program on this folder" available...
I've found two example programs which do this, but each have drawbacks for my application;
1. one is a C# application (which I'm not familiar with, though it *is* pretty similar).
Also, this CodeProject application is using registry modification to do the job; I would prefer to find a link somehow to the Explorer menu, then use InsertMenuItem() from WinAPI to add a link to my application...
2. that brings me to the second example that I found; it's in an older Platform SDK, in a utility called Shell\SampView... that application *does* do what I wish; however, that application is over 8500 lines long!! I am hoping to find a more concise solution to the problem...
Can anyone provide any guidance or example code for this??
I use C++, and build with the MinGW (32-bit) toolchain...
and yes, I realize that once I get *this* issue resolved, I'll still have a variety of other issues to resolve, such as finding the path to my application, and dealing with selection of wrong items (ideally, perhaps just grey out my menu item if the target is not a folder), and many other things, but for now, I just want to find a concise, clear solution to this one problem.
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Okay, I don't have any problem with the Registry API functions, I've used them before.
I just expected that ShellAPI would be a more conventional way to do this; something similar to what is done with setting desktop icon colors, where we start with:
HWND hwnd = FindWindow("Progman", "Program Manager");
hwnd = FindWindowEx(hwnd, NULL, "SHELLDLL_DefView", "");
hwnd = FindWindowEx(hwnd, NULL, "SysListView32", NULL);
[ error handling omitted for clarity ]
to gain access to elements under Program Manager...
For one thing, the ShellAPI process would eliminate issues with permissions, which I might have with Registry access..
Anyway, I'll look into the links you've mentioned, and try those out.
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If you depend on your application code making those changes, your app would have to run first before being able to use the Explorer context menu. Your code would also have to remember to remove those changes when it closes or upon uninstall.
Doing it through registry pokes eliminates those problems and makes them permanent until uninstall, which can be handled entirely in the installer, not your code.
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That's a good point...
for most situations that I'm thinking of using this tool, I wouldn't be removing the link once it was installed; it would be for situations such as "open this file in MyEditor", or "run MyUtility on this folder"... but yeah, initially creating the link has to be considered, in either case; My plan was to check for existence of my link when running the program, likely in WM_INITDIALOG.. if it's not there, create it.
I mostly write small utilities, so don't always use a dedicated installer...
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In that case, add command line switch support for installing your context menu items and removing them.
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Hi
I have an ownerdraw combobox I populate the entires thru the Drawitem method.
When I click on the dropdown icon I can see the entries formatted in the right font
However when I move the mouse over an item they start to disappear
Hard for me to debug this because when I make a break point on Drawitem it goes thru the code after tracing the code and going back to the combo box the listbox hasn't dropped down
This behavior only happens when I have a breakpoint on the Drawitem method
Other wise when I remove it the listbox displays and I can see all the entries I added
thanks
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If you are interrupting the drawing process then that is probably what you would expect to see. The system erases the background and then expects your code to draw the entries. But if the drawing is prevented from happening it will show empty space.
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I had the following lines around my draw
SendMessage(pdi->hwndItem, CB_GETLBTEXT, pdi->itemID, &text[0]);
DrawText(pdi->hDC, (LPCTSTR)&text[0], -1, &pdi->rcItem, nFormat);
Not sure when you click the dropdown ICN that you get ODA_SELECT and/or ODA_FOCUS
Thanks
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You can use TRACE to see the exact value(s) of itemAction member.
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I am not sure that you should be using CB_GETLBTEXT to get your items for drawing. The usual process for an owner drawn control, is that you would have your list of items somewhere in your application. However, it is some while since I have done this so would need to review my code.
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My process is that I do Addstring with values I have
Then when clicking right icon dropdown on the combo box The Drawitem exit is invoked, allowing me to format that string with font, the rcitem RECT member has Dimensions from the MeasureItem exit
the problem is at the end of stepping thru DrawItem the listbox remains intact non displayable.
Victor Suggested I use TRACE have to look into that
Thanks
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Hi
I need to detect BackSpace as well as Delete Key in a Edit Box placed on Dialog Box in a Dialog based Application. The Problem is that Edit Box has no more Events like WM_CHAR, WM_KEYDown and WM_Key Up.
Thanks
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I want to start learning C++ and create kind of windows applications like what is made in C# and WPF. I have three options: VS 2022, Code::Blocks, and QT creator 6. Which one is good for developing elegant windows applications? 
modified 29-May-22 13:56pm.
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I will address the question in the title. There`s only one IDE left (for 10 years now) so it`s not like you have too many options.
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Is Code:Blocks good for this purpose? Can I create elegant GUIs using it?
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I had to look up Code::Blocks and noticed that it incorporates wxWidgets. I don't develop GUI apps, but when I looked into the area a while ago, I bookmarked wxWidgets so I could return to it if I ever needed to. C++ doesn't have a GUI library, so you have to find one. And if you want to support different platforms, not just Windows, you need something like wxWidgets, not WPF.
As far as an IDE goes, VS2022 (Community Edition) is free and an excellent IDE. You can probably develop using wxWidgets within VS2022, but you'd likely have to spend some time configuring it, whereas Code::Blocks looks like it should work immediately. But I know next to nothing about this, so you need to get input from someone who does.
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