Hi i Want to Add Window(Gui) to my ConsoleApplication in C++
How to do this?? I need something called Hwnd? I tried to use it and it does not work for me
Basically what I want to do is a MessageBox that will be every time somewhere else on the screen .. but I realized that you have to do it with HWND.
I need Tutorial How to create windows with hwnd
I try:
HWND GetWindow(HWND hWnd, UINT uCmd);
Check if the following code meet your requirement:
#include <windows.h>
int main()
{
MessageBox(nullptr, TEXT("Hello World!"), TEXT("Message"), MB_TOPMOST);
}
It will like this:
You've used multiple tags, I have a winapi solution, not a winforms one.
You can use a std. MessageBox by calling the function, but they can't be „evolved“ into your custom windows for any reasonable „price“ so they can only notify user and ask simple yes/no questions. For „real“ windows, let's forget MessageBox.
The simplest custom window is a std. windows Dialog. It uses the pre-defined window class #32770, so you don't have to register your window class, create a message loop etc. The simplest way to open it is DialogBoxParam function. You must make a .rc dialog script (there are lots of visual editors), compile it with a resource compiler, link into your .exe and pass it's name as the parameter for DialogBoxParam.
Here's an example of a window inside a console application (C++ part only), using this DialogBoxParam call
DialogBoxParam(GetModuleHandle(NULL),"EXAMPLE",NULL,ExampleWindowFunction,NULL);
It's here: https://pastebin.com/Crkdy5FB
It also contains image drawing (you probably don't need it yet, it's left from another winapi example). Use it as a sandbox, you'll probably quickly understand how it works and what role the hWnd plays here.
I understand your problems. GUI got so overcomplicated so it's hard to understand what exactly you don't understand. It prevents from asking a good question.
Related
I know how to get and set the handle of another applications window in the code, but I don't know how to set the applications handle at runtime through an edit control. the problem is is that I have to keep compiling my application every time I want to use it, because the handle of the window in application 2 is dynamic.
does anyone have any ideas?
To find current HWND of application window you are interested in, you can enumareate windows using EnumWindows:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms633497%28v=vs.85%29.aspx
or maybe easier is to use FindWindow, if you know its name/class:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms633499%28v=vs.85%29.aspx
you can also use GetWindow to iterate windows:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms633515%28v=vs.85%29.aspx
...lots of possibilities
I'm new to MFC. Can anyone please tell me how can I get handle separate windows using MFC. My task is to take screenshot of separate windows and I want to display it. By using CWnd::GetDesktopWindow I’ll take the handle for desktop. If I want to get handle for other windows how can I get it. Now i got the handle for desktop if I want to display the desktop which I captured how I can do it. Please anyone help me.
It depends on what types of window do you want to get. To retrieve some window has specified class name or caption, please use API FindWindow(...) with class&caption as input; to get all the child windows under desktop or some top level window, you could use EnumWindows(...) in a recursive function.
In order to get the handle to all the windows on your desktop, you need the function EnumWindows.
You provide it with a callback function and it will call it with a handle to each window it finds.
To get an MFC CWnd* from a HWND, you can do this:
CWnd *const window = CWnd::FromHandle(hWnd);
Short version:
How do I initialize and use DirectInput if I have no access to the HWND/HINSTANCE?
Background information:
I am currently using SFML for most parts of my program, amongst others for window creation. Works like a charm. But I'm not fully satisfied with SFML's input system (e.g. I want XInput for XBox 360 gamepads) and want to write my own.
I've already written the XInput part, but for other gamepads/joysticks/... I also need DirectInput. Since SFML hides the Windows-related code from the user (and rightly so) I don't have access to the hwnd or hinstance. How can I use DirectInput without it? Maybe catching input all the time, not only when the window is active? (I could then filter it based on the Window's (de)activated event.)
Thanks,
Mr. Wonko
Finding the window back isn't too hard, use EnumThreadWindows() and GetCurrentThreadId().
Note that DirectInput doesn't need a window handle anywhere. It just needs the instance handle in DirectInput8Create(). GetModuleHandle(NULL) is good for an SFML app.
To get HINSTANCE you can call: GetModuleHandle(NULL)
I would like to use c++ without mfc(and not clr) in order to modify textbox's and activate a button on a form outside of my project. I don't know where to start. I've done a lot of searching but can only find information for VB. A starting point would help.
Thanks.
I tried this and it doesn't seem to work.
HWND fWindow = FindWindow(NULL ,(LPCWSTR)"title");
and I also tried this
HWND fWindow = FindWindow(NULL ,LPCWSTR("title"));
I ALSO tried using LPTSTR instead of LPCWSTR, incase it was a unicode deal.
Maybe I don't understand this microsoft LPCWSTR and LPTSTR crap.
I also tried
HWND fWindow = FindWindow(NULL,TEXT("title"));
and that didn't work.
I guess the windows api must just be broken.
I tried the function on other programs...I'm using xp and I tried catching the calculator, and an explorer window, and something else. But I got nothing.
Heres some of the exact code I'm using to try and figure this out.
HWND face = NULL;
face = FindWindow(NULL,TEXT("My Computer"));
LPSTR title = TEXT("");
GetWindowText(face,title,250);
if(face != NULL)
{
MessageBox(NULL,title,TEXT("WOOP"),1);
}
face = nothing.
title = ""
Bear in mind, I'm not actually trying to hook explorer, I just want to figure out how to get it to work.
Use spy++ or winspector to see the actual "text" of the window.
(Strictly speaking, the caption of the window need not match it's window text. Especially true of "fancy" windows which paint their own caption.)
The following works fine for me (using Calc.exe to test).
HWND hwnd = NULL;
hwnd = FindWindow(NULL,_T("Calculator"));
TCHAR title[251];
if(hwnd != NULL)
{
GetWindowText(hwnd,title,250);
MessageBox(NULL,title,_T("WOOP"),MB_OK);
}
else
MessageBox(NULL,_T("No such window."),_T("OOPS"),MB_OK);
Edit: You should have used _TEXT instead of TEXT.
One way to do this is to use FindWindow to get a handle to the form. Then if you know the button and edit window Ids, you can use GetDlgItem to get their window handles. If you dont know the ids, you can use EnumChildWindows to examine all of the controls on the form.
Once you have the window handles for the controls, you can use SetWindowText to set the text on the edit control, and send a WM_COMMAND message to the form window with the button ID as the command value to make the form think that the button has been clicked.
There are a lot of ways to go about this once you have the correct window handles. There are security issues when you use the window handles of another process, but if the process isn't secured, then inter-process use of window handles just works. For a secured process, you won't be able to find out the window handles.
The windows API provides Methods for this. These should be independent of MFC and CLR, as they are plain win32. I had a project once accessing the Form fields of an Applictation from a loaded DLL (don't ask why).
you might want to look here (Codeproject)
or here (msdn)
At first, you need to obtain a handle to the process you want to access.
When have this, you can use GetDlgItem() (search msdn for that) to retrieve a handle to the desired textbox.
With this handle, you should be able to modify the control in question.
If your trying to get big (and do some more UI automation), you sould have a closer look at these:
Microsoft Active Accessibility
IAccessible2
Microsoft UI Automation
Windows Automation API (Win7)
I have a written a Visual C++ console application (i.e. subsystem:console) that prints useful diagnositic messages to the console.
However, I would like to keep the application minimized most of the time, and instead of minimizing to the taskbar, appear as a nice icon on the system tray. I would also like to restore the console when the system tray icon is clicked.
How should I change my program to do this?
This is going to be an ugly hack.
First, you have to retrieve the hWnd / hInstance of you console application. Right now, I can only come up with one way:
Create a Guid with CoCreateGuid()
Convert it to a string
Set the title of the console window to this guid with SetConsoleTitle()
Find the hWnd of the your window with the Guid as the tile with FindWindow()
And you can do it from the usual way from this point. See http://www.gidforums.com/t-9218.html for more info.
Don't forget the rename your console window to the original title once you're done.
As you can see, even though this is possible to do, it's a horrible and painful solution. Please don't do it. Please do not minimize console applications to the system tray. It is not something you are supposed to be able to do in the Windows API.
You might want to write a separate gui to function as a log reader. You will then find it much easier to make this minimize to the tray. It would also let you do some other stuff you might find useful, such as changing which level of logging messages are visible on the fly.
To learn the console's hWnd you have two choices:
On Windows 2000 or later you can use the GetConsoleWindow() function. Don't forget to define _WIN32_WINNT as 0x0500 or greater before including windows.h to have access to this function.
If you want to run your program on earlier Windows versions as well then you must use something like the GUID trick described above.
Probably your best bet is to create a "Message-only window" (a message queue without a visible window) to receive the Notification Area messages.
The answer with a GUID is completely ridiculous (no sense at all)
The Console hWnd is of course given by GetConsoleWindow() (!)