DreamForse
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« : 18-02-2014 17:52 »  |
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Добрый вечер,разрабатываю калькулятор на winapi хотелось бы узнать как реализовать функции что бы найти синус,косинус,корень квадратный,степень от числа,буду благодарен если кто-то подскажет функции или поможет дописать,пишу в C++ Builder #include <windows.h>
#include <windowsx.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
HWND fieldedit1,fieldedit2,fieldedit3;
HWND button1,button2,button3,button4,button5,button6,button7;
char szClassName[] = "Mywindow";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)
{
HWND hwnd;
MSG messages;
WNDCLASSEX wincl;
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure;
wincl.style = CS_DBLCLKS;
wincl.cbSize = sizeof (WNDCLASSEX);
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL;
wincl.cbClsExtra = 0;
wincl.cbWndExtra = 0;
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
if (!RegisterClassEx (&wincl))
return 0;
hwnd=CreateWindowEx(0,szClassName,"Êàëüêóëÿòîð",WS_OVERLAPPEDWINDOW,0,0,350,400,NULL,NULL,NULL,NULL);
fieldedit1=CreateWindow("EDIT","",WS_VISIBLE|WS_CHILD,30,50,125,30,hwnd,NULL,NULL,NULL);
fieldedit2=CreateWindow("EDIT","",WS_VISIBLE|WS_CHILD,30,90,125,30,hwnd,NULL,NULL,NULL);
fieldedit3=CreateWindow("EDIT","Ðåçóëüòàò",WS_VISIBLE|WS_CHILD|ES_CENTER|ES_READONLY ,200,75,100,25,hwnd,NULL,NULL,NULL);
button1=CreateWindow("button","+",WS_VISIBLE|WS_CHILD,50,150,40,40,hwnd,NULL,NULL,NULL);
button2=CreateWindow("button","-",WS_VISIBLE|WS_CHILD,100,150,40,40,hwnd,NULL,NULL,NULL);
button3=CreateWindow("button","/",WS_VISIBLE|WS_CHILD,150,150,40,40,hwnd,NULL,NULL,NULL);
button4=CreateWindow("button","*",WS_VISIBLE|WS_CHILD,200,150,40,40,hwnd,NULL,NULL,NULL);
button5=CreateWindow("button","Î÷èñòèòè",WS_VISIBLE|WS_CHILD,50,200,90,40,hwnd,NULL,NULL,NULL);
button6=CreateWindow("button","Âèõ³ä",WS_VISIBLE|WS_CHILD,150,200,90,40,hwnd,NULL,NULL,NULL);
ShowWindow (hwnd,nFunsterStil);
while (GetMessage (&messages, NULL, 0, 0))
{
TranslateMessage(&messages);
DispatchMessage(&messages);
}
return messages.wParam;
}
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_COMMAND:
if ((HWND)lParam == button2)
{
int d1 = 0,d2 = 0;
char number1[10];
Edit_GetLine(fieldedit1,0,number1,10);
d1 = atoi(number1);
char number2[10];
Edit_GetLine(fieldedit2,0,number2,10);
d2 = atoi(number2);
char result[10];
if (d1-d2)
{
itoa (d1-d2,result,10);
Edit_SetText(fieldedit3,result);
}
else
{
Edit_SetText(fieldedit3,"0");
}
}
if ((HWND)lParam == button1)
{
int d1 = 0,d2 = 0;
char number1[10];
Edit_GetLine(fieldedit1,0,number1,10);
d1 = atoi(number1);
char number2[10];
Edit_GetLine(fieldedit2,0,number2,10);
d2 = atoi(number2);
char result[10];
if (d1+d2)
{
itoa (d1+d2,result,10);
Edit_SetText(fieldedit3,result);
}
else
{
Edit_SetText(fieldedit3,"ERROR");
}
}
if ((HWND)lParam == button3)
{
int d1 = 0,d2 = 0;
char number1[10];
Edit_GetLine(fieldedit1,0,number1,10);
d1 = atoi(number1);
char number2[10];
Edit_GetLine(fieldedit2,0,number2,10);
d2 = atoi(number2);
char result[10];
if (d2 != 0)
{
itoa (d1/d2,result,10);
Edit_SetText(fieldedit3,result);
}
else
{
Edit_SetText(fieldedit3,"ERROR");
}
}
if ((HWND)lParam == button4)
{
int d1 = 0,d2 = 0;
char number1[10];
Edit_GetLine(fieldedit1,0,number1,10);
d1 = atoi(number1);
char number2[10];
Edit_GetLine(fieldedit2,0,number2,10);
d2 = atoi(number2);
char result[10];
if (d1*d2)
{
itoa (d1*d2,result,10);
Edit_SetText(fieldedit3,result);
}
else
{
Edit_SetText(fieldedit3,"ERROR");
}
}
if ((HWND)lParam == button5)
{
int d1 = 0,d2 = 0;
char number1[10];
Edit_GetLine(fieldedit1,0,number1,10);
d1 = atoi(number1);
char number2[10];
Edit_GetLine(fieldedit2,0,number2,10);
d2 = atoi(number2);
char result[10];
{
Edit_SetText(fieldedit3,"");
}
}
if ((HWND)lParam == button6)
{
SendMessage(hwnd,WM_CLOSE,0,0);
}
break;
case WM_DESTROY:
PostQuitMessage (0);
break;
default:
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
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