[Help] calling a fuction by address? topic

Hello Friends,

I want to call a function in a Process i injected my dll to from which I got the Address with the FindPattern function.
this is function head:

PHP Code:

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void __cdecl draw_text(const char *str, int left, int top, int r, int g, int b, int a, int cursor, int maxwidth) 





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(this is what ida spits out)
I tried assigning the address to a function pointer but does not work

PHP Code:

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void ( __cdecl *draw_text_t)(const char *str, int left, int top,int,int,int,int,int,int) = draw_text; 





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It says i can't initiallize a function by DWORD.

then I tried calling function manually

PHP Code:

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void callDrawText(const char *str, int left, int top, DWORD drawText)
{
    __asm
    {
        push 0xFFFFFFFF
        push 0xFFFFFFFF
        push 0xFF
        push 0xFF
        push 0xFF
        push 0xFF
        push top
        push left
        push str
        call drawText
    }//where drawText holds the address of function
} 





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but it crashes and says ESP not got saved correctly???

Could you help me? Thanks in advance :yikes: