alternate to FindWindow() ?

This is a discussion on alternate to FindWindow() ? within the Windows Programming forums, part of the Platform Specific Boards category; Is there a better way to find a window's hWnd than FindWindow()? FindWindow uses the window's actual caption to find ...

  1. #1
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    alternate to FindWindow() ?

    Is there a better way to find a window's hWnd than FindWindow()? FindWindow uses the window's actual caption to find its hwnt, which isnt working out.
    Preferably something that usesa pid or executable name.

  2. #2
    Cat without Hat CornedBee's Avatar
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    Try passing the window class to FindWindow.

    You can enumerate a process's windows, but that's quite complicated. FindWindow is generally the best way.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

  3. #3
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    Sorry, Im not too familiar with this. How do I find what the window class is?

  4. #4
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    So does anyone have any help?
    Specifically I need to know the class name of the default console window when you open a c++ prog in explorer.

  5. #5
    Reverse Engineer maxorator's Avatar
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    Write a program that enumerates all windows and tells you the class names of them.
    "The Internet treats censorship as damage and routes around it." - John Gilmore

  6. #6
    Reverse Engineer maxorator's Avatar
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    Try to compile this:
    Code:
    #include <windows.h>
    #include <string>
    #define BTN_ENUMERATE 32001
    
    /*  Declare Windows procedure  */
    LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
    BOOL CALLBACK Enumerating(HWND hwnd,LPARAM lParam);
    HWND controls[2];
    std::string container;
    
    /*  Make the class name into a global variable  */
    char szClassName[ ] = "WindowsApp";
    
    int WINAPI WinMain (HINSTANCE hThisInstance,
    					HINSTANCE hPrevInstance,
    					LPSTR lpszArgument,
    					int nFunsterStil)
    
    {
    	HWND hwnd;				/* This is the handle for our window */
    	MSG messages;			/* Here messages to the application are saved */
    	WNDCLASSEX wincl;		/* Data structure for the windowclass */
    
    	/* The Window structure */
    	wincl.hInstance = hThisInstance;
    	wincl.lpszClassName = szClassName;
    	wincl.lpfnWndProc = WindowProcedure;	/* This function is called by windows */
    	wincl.style = CS_DBLCLKS;				/* Catch double-clicks */
    	wincl.cbSize = sizeof (WNDCLASSEX);
    
    	/* Use default icon and mouse-pointer */
    	wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    	wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    	wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    	wincl.lpszMenuName = NULL;				/* No menu */
    	wincl.cbClsExtra = 0;					/* No extra bytes after the window class */
    	wincl.cbWndExtra = 0;					/* structure or the window instance */
    	/* Use Windows's default color as the background of the window */
    	wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
    
    	/* Register the window class, and if it fails quit the program */
    	if (!RegisterClassEx (&wincl))
    		return 0;
    
    	/* The class is registered, let's create the program*/
    	hwnd = CreateWindowEx (
    		   0,					/* Extended possibilites for variation */
    		   szClassName,			/* Classname */
    		   "Windows App",		/* Title Text */
    		   WS_OVERLAPPEDWINDOW, /* default window */
    		   CW_USEDEFAULT,		/* Windows decides the position */
    		   CW_USEDEFAULT,		/* where the window ends up on the screen */
    		   544,					/* The programs width */
    		   375,					/* and height in pixels */
    		   HWND_DESKTOP,		/* The window is a child-window to desktop */
    		   NULL,				/* No menu */
    		   hThisInstance,		/* Program Instance handler */
    		   NULL					/* No Window Creation data */
    		   );
    
    	/* Make the window visible on the screen */
    	ShowWindow (hwnd, nFunsterStil);
    
    	/* Run the message loop. It will run until GetMessage() returns 0 */
    	while (GetMessage (&messages, NULL, 0, 0))
    	{
    		/* Translate virtual-key messages into character messages */
    		TranslateMessage(&messages);
    		/* Send message to WindowProcedure */
    		DispatchMessage(&messages);
    	}
    
    	/* The program return-value is 0 - The value that PostQuitMessage() gave */
    	return messages.wParam;
    }
    
    
    /*  This function is called by the Windows function DispatchMessage()  */
    
    LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
    	switch (message)					/* handle the messages */
    	{
    		case WM_CREATE:
    			controls[0]=CreateWindowEx(0,"Button","Enumerate",WS_CHILD|WS_VISIBLE,3,3,100,23,
    				hwnd,(HMENU)BTN_ENUMERATE,GetModuleHandle(NULL),NULL);
    			controls[1]=CreateWindowEx(0,"Edit","",WS_CHILD|WS_VISIBLE|WS_BORDER|ES_MULTILINE|
    				ES_AUTOVSCROLL|ES_AUTOHSCROLL,3,29,531,317,hwnd,NULL,GetModuleHandle(NULL),NULL);
    			break;
    		case WM_COMMAND:
    			switch(wParam){
    				case BTN_ENUMERATE:
    					container.clear();
    					EnumWindows(Enumerating,0);
    					SetWindowText(controls[1],container.c_str());
    					break;
    			}
    			break;
    		case WM_DESTROY:
    			PostQuitMessage (0);		/* send a WM_QUIT to the message queue */
    			break;
    		default:						/* for messages that we don't deal with */
    			return DefWindowProc (hwnd, message, wParam, lParam);
    	}
    
    	return 0;
    }
    
    BOOL CALLBACK Enumerating(HWND hwnd,LPARAM lParam){
    	char temp[256];
    	GetWindowText(hwnd,temp,256);
    	container.insert(container.length(),"Caption: ");
    	container.insert(container.length(),temp);
    	container.insert(container.length(),"; Classname: ");
    	GetClassName(hwnd,temp,256);
    	container.insert(container.length(),temp);
    	container.insert(container.length(),"\r\n");
    	return true;
    }
    "The Internet treats censorship as damage and routes around it." - John Gilmore

  7. #7
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    ok, thanks alot. I got the name from that.

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