int to parameter anyway? casting?

This is a discussion on int to parameter anyway? casting? within the C++ Programming forums, part of the General Programming Boards category; Code: void CProcess::SendText(char input[]) { HWND hWnd; int count, number_of_output = sizeof(input); hWnd = FindWindow(0, "Nexus"); ShowWindow(hWnd, SW_SHOW); SetForegroundWindow(hWnd); Delay(20000); ...

  1. #1
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    int to parameter anyway? casting?

    Code:
    void CProcess::SendText(char input[])
    {
    	HWND hWnd;
    	int count, number_of_output = sizeof(input);
    	hWnd = FindWindow(0, "Nexus");
    	
    	ShowWindow(hWnd, SW_SHOW);
    	SetForegroundWindow(hWnd);
    	Delay(20000);
    
    	for(count=0;count<number_of_output;count++)
    	{
    		if(input[count] == (char)"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","0","1","2","3","4","5","6","7","8","9")
    		{
    			keybd_event("VK_"+input[count],0,0,0);
    		}
    		if(input[count] == (char)"/0")
    		{
    			keybd_event(VK_SPACE,0,0,0);
    		}
    	}
    
    	return;
    }
    Code:
    --------------------Configuration: Macro - Win32 Debug--------------------
    Compiling...
    Main.cpp
    c:\program files\microsoft visual studio\myprojects\macro\apis.h(144) : error C2664: 'keybd_event' : cannot convert parameter 1 from 'char [4]' to 'unsigned char'
            This conversion requires a reinterpret_cast, a C-style cast or function-style cast
    Error executing cl.exe.
    
    Main.obj - 1 error(s), 0 warning(s)
    Thanks

  2. #2
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    You're trying to pass the literal string "VK_A" (or b, or whatever) - what the function wants is the symbolic constant VK_A

  3. #3
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    Quote Originally Posted by Stuka
    You're trying to pass the literal string "VK_A" (or b, or whatever) - what the function wants is the symbolic constant VK_A
    How can I get this to work?

    how do I add VK_+value to equal a(n) parameter?

    Thanks

  4. #4
    carry on JaWiB's Avatar
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    Seattle, WA
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    Take a look at the virtual keycode list There is no VK_A (AFAIK). Also, the comma operator

    Just because it doesn't flag an error doesn't mean it does what you want it to do.
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
    -John Milton, Paradise Regained (1671)

    "Work hard and it might happen."
    -XSquared

  5. #5
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    Feb 2005
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    Quote Originally Posted by JaWiB
    Take a look at the virtual keycode list There is no VK_A (AFAIK). Also, the comma operator

    Just because it doesn't flag an error doesn't mean it does what you want it to do.
    http://mech.math.msu.su/~vfnik/WinAp...lkeycodes.html

    my bad... for thinking there was VK_A.... =( crap I think in VB you can use VK_A...

    I know what you guys mean now.. thanks!

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