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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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v_13_11
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gilhooly
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mainwind.c
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C/C++ Source or Header
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1995-09-10
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4KB
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140 lines
---------------- MAINWND.C -- (Window Procedure) ----------------
#include "pulse.h"
/*
Routine: MainWndProc
Called By: Windows
Usage: This is the window procedure for the main window
*/
long FAR PASCAL MainWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
char szBuffer[BUFMAX+1];
char szTitle[BUFMAX+1];
static DWORD dwIn = 0,
dwOut = 0;
static DWORD MaxTicks = 0,
MinTicks = 32767;
DWORD Ticks;
HDC hDC;
HMENU hPulseMenu;
PAINTSTRUCT ps;
POINT ptClick;
RECT rect;
switch (message)
{
/*
read INI file, reset window position to previous, floating over all other, start clock
*/
case WM_CREATE:
GetIni();
SetWindowPos(hWnd, HWND_TOPMOST, nXPos, nYPos, 100, 50, 0);
SetTimer(hWnd, ID_TIMER, (UINT)1000, NULL);
break;
/*
save the last position (for restoring on restart)
*/
case WM_MOVE:
nXPos = LOWORD(lParam);
nYPos = HIWORD(lParam);
wsprintf(szBuffer, "%d", nXPos);
WriteProfileString("Pulse", "XPos", szBuffer);
wsprintf(szBuffer, "%d", nYPos);
WriteProfileString("Pulse", "YPos", szBuffer);
break;
/*
all we do on the timer is redraw our contents
*/
case WM_TIMER:
InvalidateRect(hWnd, NULL, TRUE);
break;
/*
RMB creates context menu - selection processed in WM_COMMAND
*/
case WM_RBUTTONDOWN:
hPulseMenu = CreatePopupMenu();
InsertMenu(hPulseMenu, 0, MF_BYPOSITION, MI_PULSE, "&Current");
InsertMenu(hPulseMenu, 1, MF_BYPOSITION, MI_MAXPULSE, "Ma&x Pulse");
InsertMenu(hPulseMenu, 2, MF_BYPOSITION, MI_MINPULSE, "Mi&n Pulse");
ptClick = MAKEPOINT(lParam);
ClientToScreen(hWnd, &ptClick);
TrackPopupMenu(hPulseMenu, TPM_LEFTALIGN, ptClick.x, ptClick.y, 0, hWnd, NULL);
InvalidateRect(hWnd, NULL, TRUE);
DestroyMenu(hPulseMenu);
break;
case WM_COMMAND:
Mode = wParam;
wsprintf(szBuffer, "%d", Mode);
WriteProfileString("Pulse", "Mode", szBuffer);
break;
case WM_PAINT:
dwIn = GetTickCount();
hDC = BeginPaint(hWnd, &ps);
GetClientRect(hWnd, &rect);
if (dwOut)
{
SetTextColor(hDC, RGB(0, 0, 255));
Ticks = dwIn - dwOut;
switch (Mode)
{
case MI_PULSE:
lstrcpy(szTitle, (LPSTR)"Pulse");
wsprintf(szBuffer, "%lu Ticks", (DWORD)Ticks);
break;
case MI_MAXPULSE:
lstrcpy(szTitle, (LPSTR)"Max Pulse");
wsprintf(szBuffer, "%lu Ticks", (DWORD)MaxTicks);
break;
case MI_MINPULSE:
lstrcpy(szTitle, (LPSTR)"Min Pulse");
wsprintf(szBuffer, "%lu Ticks", (DWORD)MinTicks);
break;
}
/*
we draw the text centered in the client area
*/
GetClientRect(hWnd, &rect);
DrawText(hDC, szBuffer, -1, &rect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
SetWindowText(hWnd, szTitle);
/*
reset global counters if necessary
*/
if (Ticks > MaxTicks)
MaxTicks = Ticks;
if (Ticks < MinTicks)
MinTicks = Ticks;
}
EndPaint(hWnd, &ps);
dwOut = GetTickCount();
break;
/*
pressing the home key emulates clicking the RMB
*/
case WM_KEYDOWN:
if (wParam == VK_HOME)
PostMessage(hWnd, WM_RBUTTONDOWN, (WPARAM)0, MAKELPARAM(0, 0));
break;
case WM_CLOSE:
PutIni();
DestroyWindow(hWnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return (DefWindowProc(hWnd, message, wParam, lParam));
break;
}
return (NULL);
}