WM_COPYDATA Help Please

i'm using vc6

i'm trying to make SendMessage with WM_COPYDATA send to other application
but dont' know how to do struct

this is the info i'm trying to send

(WPARAM) (HWND) (LPARAM)

how do i make this into string like -> 26589|2134|122345

thankx

Hey,

Code:

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string myString;
myString = "26589|2134|122345";

COPYDATASTRUCT cds;
cds.cdData = sizeof(myString);
cds.lpData = &myString;
cds.dwData = 0x1234;


HWND hHwnd;
hHwnd = FindWindow("Notepad", NULL);
SendMessage(hHwnd, WM_COPYDATA, (WPARAM)"SOMETHINGHERE", (LPARAM)&cds);

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It depends on what the application is expecting as to what you should send it. If it's expecting a string, then something like that would work, although you're going to have to set your string up the way you want it.
If it's expecting a custom struct then something different would be required.

26589<---hwnd
2134<----wparam
122345<--lparam

how to get them into string?

Code:

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        HWND hWnd = (HWND)26589;
        WPARAM wParam = (WPARAM)2134;
        LPARAM lParam = (LPARAM)122345;
       
        char pString[256] = "";
        sprintf(pString, "%i|%i|%i", hWnd, wParam, lParam);

        COPYDATASTRUCT cds;
        cds.cbData = sizeof(pString);
        cds.lpData = &pString;
        cds.dwData = 0x1234;

        HWND hHwnd;
        hHwnd = FindWindow("Notepad", NULL);
        SendMessage(hHwnd, WM_COPYDATA, (WPARAM)"SOMETHINGHERE", (LPARAM)&cds);

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