Leaked source code of windows server 2003
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/*++
Copyright (C) 1996-1999 Microsoft Corporation
Module Name:
snapbar.cpp
Abstract:
Implementation of the snapshot icon.
--*/
#include <windows.h>
#include "snapbar.h"
#include "resource.h"
#define SNAPBTN_HEIGHT 24
#define SNAPBTN_WIDTH 32
#define SNAPBTN_VMARGIN 1
#define SNAPBTN_HMARGIN 8
#define SNAPBAR_HEIGHT (SNAPBTN_HEIGHT + 2 * SNAPBTN_VMARGIN)
#define SNAPBAR_WIDTH (SNAPBTN_WIDTH + SNAPBTN_HMARGIN)
CSnapBar::CSnapBar (
VOID
)
{
m_hWnd = NULL;
m_hBitmap = NULL;
}
CSnapBar::~CSnapBar (
VOID
)
{
if (m_hWnd != NULL && IsWindow(m_hWnd))
DestroyWindow(m_hWnd);
if (m_hBitmap != NULL)
DeleteObject(m_hBitmap);
}
BOOL
CSnapBar::Init (
IN CSysmonControl *pCtrl,
IN HWND hWndParent
)
{
HINSTANCE hInst;
m_pCtrl = pCtrl;
hInst = (HINSTANCE) GetWindowLongPtr(hWndParent, GWLP_HINSTANCE);
// Create the button window
m_hWnd = CreateWindow(L"BUTTON", NULL,
WS_VISIBLE| WS_CHILD| BS_BITMAP| BS_PUSHBUTTON,
0, 0, SNAPBTN_WIDTH, SNAPBTN_HEIGHT,
hWndParent,
(HMENU)IDC_SNAPBTN,
hInst,
NULL);
if (m_hWnd == NULL)
return FALSE;
// Point back to object
//SetWindowLongPtr(m_hWnd, 0, (INT_PTR)this);
// Insert our own window procedure for special processing
//m_WndProc = (WNDPROC)SetWindowLongPtr(hWndParent, GWLP_WNDPROC, (INT_PTR)SnapBarWndProc);
// Load the bitmap
m_hBitmap = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_SNAPBTN));
if (m_hBitmap == NULL)
return FALSE;
// Assign it to the button
SendMessage(m_hWnd, BM_SETIMAGE, (WPARAM)IMAGE_BITMAP, (LPARAM)m_hBitmap);
return TRUE;
}
INT
CSnapBar::Height (
IN INT iMaxHeight
)
{
return (iMaxHeight >= SNAPBAR_HEIGHT) ? SNAPBAR_HEIGHT : 0;
}
VOID
CSnapBar::SizeComponents (
IN LPRECT pRect
)
{
// If room for the button
if ((pRect->bottom - pRect->top) >= SNAPBAR_HEIGHT &&
(pRect->right - pRect->left) >= SNAPBAR_WIDTH ) {
// Position it in top right corner of space
MoveWindow(m_hWnd, pRect->right - SNAPBAR_WIDTH,
pRect->top + SNAPBTN_VMARGIN, SNAPBTN_WIDTH, SNAPBTN_HEIGHT,
FALSE);
ShowWindow(m_hWnd, TRUE);
}
else {
ShowWindow(m_hWnd, FALSE);
}
}
LRESULT CALLBACK
SnapBarWndProc (
HWND hWnd,
UINT uiMsg,
WPARAM wParam,
LPARAM lParam
)
{
PSNAPBAR pObj = (PSNAPBAR)GetWindowLongPtr(hWnd,0);
// Give up focus after mouse activation
if (uiMsg == WM_CAPTURECHANGED)
SetFocus(GetParent(hWnd));
// Do normal processing
#ifdef STRICT
return CallWindowProc(pObj->m_WndProc, hWnd, uiMsg, wParam, lParam);
#else
return CallWindowProc((FARPROC)pObj->m_WndProc, hWnd, uiMsg, wParam, lParam);
#endif
}