www.pudn.com > FFTdemo.zip > main.c
#include
#include "main.h"
#include "fft.h"
/* Declare Windows procedure
*/
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Paint Function by xinwang
*/
void paint(HDC hdc);
/* Make the class name into a global variable */
char szClassName[ ] = "WindowsApp";
char szAppName[ ] = "resource";
/* Some GUI interface hwnd
*/
HWND hGroupWFrm; /* wave form */
HWND hRadioWSqu;
HWND hRadioWSin;
HWND hRadioWTri; int wfsel[3] = {1,0,0};
HWND hGroupWAtr; /* wave attribute */
HWND hLaberWCyc;
HWND hEditWCyc; int cycle = 100;
HWND hLaberWSco;
HWND hEditWSco; int scope = 50;
HWND hLaberWPar;
HWND hEditWPar; int parse = 0;
HWND hGroupSamp; /* sample control */
HWND hLaberSAlt;
HWND hEditSAlt; int smp_alter = 1;
HWND hLaberSNum;
HWND hEditSNum; int smp_num = 512;
HWND hButtonOK; /* Action button */
/* Userful variable */
char strtmp[] = "";
char* strstop;
int nmax;
/* wave form */
enum {SQU, SIN, TRI} wave;
/* This instance handle
*/
HINSTANCE hInst;
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 (hThisInstance, "mico");
wincl.hIconSm = LoadIcon (hThisInstance, "mico");
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 */
600, /* The programs width */
500, /* 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);
hInst = hThisInstance;
/* 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)
{
/* for message wm_paint */
HDC hdc;
PAINTSTRUCT ptstr;
switch (message) /* handle the messages */
{
case WM_CREATE:
/* Add display control.
*/
hGroupWFrm = CreateWindow("BUTTON",
"波形",
WS_CHILD|WS_VISIBLE|BS_GROUPBOX,
FRX, FRY, 130, 110,
hwnd, (HMENU)IDG_WFRM,
hInst, NULL
);
hRadioWSqu = CreateWindow("BUTTON",
"方波",
WS_CHILD|WS_VISIBLE|BS_RADIOBUTTON,
FRX+30, FRY+25, 80, 20,
hwnd, (HMENU)IDR_WSQU,
hInst, NULL
);
hRadioWSin = CreateWindow("BUTTON",
"正弦波",
WS_CHILD|WS_VISIBLE|BS_RADIOBUTTON,
FRX+30, FRY+50, 80, 20,
hwnd, (HMENU)IDR_WSIN,
hInst, NULL
);
hRadioWTri = CreateWindow("BUTTON",
"三角波",
WS_CHILD|WS_VISIBLE|BS_RADIOBUTTON,
FRX+30, FRY+75, 80, 20,
hwnd, (HMENU)IDR_WTRI,
hInst, NULL
);
hGroupWAtr = CreateWindow("BUTTON",
"波形属性",
WS_CHILD|WS_VISIBLE|BS_GROUPBOX,
FRX+150, FRY, 180, 110,
hwnd, (HMENU)IDG_WATR,
hInst, NULL
);
hLaberWCyc = CreateWindow("STATIC",
"周期",
WS_CHILD|WS_VISIBLE,
FRX+180, FRY+25, 40, 20,
hwnd, (HMENU)IDS_WCYC,
hInst, NULL
);
hEditWCyc = CreateWindow("EDIT",
"100",
WS_CHILD|WS_VISIBLE|WS_BORDER|ES_RIGHT,
FRX+220, FRY+25, 80, 20,
hwnd, (HMENU)IDE_WCYC,
hInst, NULL
);
hLaberWSco = CreateWindow("STATIC",
"幅值",
WS_CHILD|WS_VISIBLE,
FRX+180, FRY+50, 40, 20,
hwnd, (HMENU)IDS_WSCO,
hInst, NULL
);
hEditWSco = CreateWindow("EDIT",
"50",
WS_CHILD|WS_VISIBLE|WS_BORDER|ES_RIGHT,
FRX+220, FRY+50, 80, 20,
hwnd, (HMENU)IDE_WSCO,
hInst, NULL
);
hLaberWPar = CreateWindow("STATIC",
"相位",
WS_CHILD|WS_VISIBLE,
FRX+180, FRY+75, 40, 20,
hwnd, (HMENU)IDS_WPAR,
hInst, NULL
);
hEditWPar = CreateWindow("EDIT",
"0",
WS_CHILD|WS_VISIBLE|WS_BORDER|ES_RIGHT,
FRX+220, FRY+75, 80, 20,
hwnd, (HMENU)IDE_WPAR,
hInst, NULL
);
hGroupSamp = CreateWindow("BUTTON",
"取样",
WS_CHILD|WS_VISIBLE|BS_GROUPBOX,
FRX+350, FRY, 200, 110,
hwnd, (HMENU)IDG_SAMP,
hInst, NULL
);
hLaberSAlt = CreateWindow("STATIC",
"取样间隔",
WS_CHILD|WS_VISIBLE,
FRX+380, FRY+25, 80, 20,
hwnd, (HMENU)IDS_SALT,
hInst, NULL
);
hEditSAlt = CreateWindow("EDIT",
"1",
WS_CHILD|WS_VISIBLE|WS_BORDER|ES_RIGHT,
FRX+450, FRY+25, 80, 20,
hwnd, (HMENU)IDE_SALT,
hInst, NULL
);
hLaberSNum = CreateWindow("STATIC",
"取样数",
WS_CHILD|WS_VISIBLE,
FRX+380, FRY+50, 80, 20,
hwnd, (HMENU)IDS_SNUM,
hInst, NULL
);
hEditSNum = CreateWindow("EDIT",
"512",
WS_CHILD|WS_VISIBLE|WS_BORDER|ES_RIGHT,
FRX+450, FRY+50, 80, 20,
hwnd, (HMENU)IDE_SNUM,
hInst, NULL
);
hButtonOK = CreateWindow("BUTTON",
"OK",
WS_CHILD|WS_VISIBLE,
FRX+450, FRY+80, 80, 20,
hwnd, (HMENU)IDC_OK,
hInst, NULL
);
SendMessage(hRadioWSqu, BM_SETCHECK, 1, 0);
break;
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ptstr);
paint(hdc);
EndPaint(hwnd, &ptstr);
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDR_WSQU:
wfsel[0]=1; wfsel[1]=0; wfsel[2]=0;
SendMessage(hRadioWSqu, BM_SETCHECK, wfsel[0], 0);
SendMessage(hRadioWSin, BM_SETCHECK, wfsel[1], 0);
SendMessage(hRadioWTri, BM_SETCHECK, wfsel[2], 0);
break;
case IDR_WSIN:
wfsel[0]=0; wfsel[1]=1; wfsel[2]=0;
SendMessage(hRadioWSqu, BM_SETCHECK, wfsel[0], 0);
SendMessage(hRadioWSin, BM_SETCHECK, wfsel[1], 0);
SendMessage(hRadioWTri, BM_SETCHECK, wfsel[2], 0);
break;
case IDR_WTRI:
wfsel[0]=0; wfsel[1]=0; wfsel[2]=1;
SendMessage(hRadioWSqu, BM_SETCHECK, wfsel[0], 0);
SendMessage(hRadioWSin, BM_SETCHECK, wfsel[1], 0);
SendMessage(hRadioWTri, BM_SETCHECK, wfsel[2], 0);
break;
case IDC_OK:
if (wfsel[0]==1)
wave = SQU;
if (wfsel[1]==1)
wave = SIN;
if (wfsel[2]==1)
wave = TRI;
nmax = GetWindowTextLength(hEditWCyc)+1;
GetWindowText(hEditWCyc, strtmp, nmax);
cycle = strtol(strtmp, &strstop, 10);
nmax = GetWindowTextLength(hEditWSco)+1;
GetWindowText(hEditWSco, strtmp, nmax);
scope = strtol(strtmp, &strstop, 10);
nmax = GetWindowTextLength(hEditWPar)+1;
GetWindowText(hEditWPar, strtmp, nmax);
parse = strtol(strtmp, &strstop, 10);
nmax = GetWindowTextLength(hEditSAlt)+1;
GetWindowText(hEditSAlt, strtmp, nmax);
smp_alter = strtol(strtmp, &strstop, 10);
nmax = GetWindowTextLength(hEditSNum)+1;
GetWindowText(hEditSNum, strtmp, nmax);
smp_num = strtol(strtmp, &strstop, 10);
InvalidateRect(hwnd, NULL, TRUE);
break;
}
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
/* paint function */
void paint(HDC hdc)
{
int L=0, N=1;
while (N