DRAGIMG.CPP

////////////////////////////////////////////////////////////////////////// 
// 
//  dragimg.cpp 
// 
//  This is the windows application that is used to host the  
//  DAViewerControl. 
// 
// 
//  (C) Copyright 1997 by Microsoft Corporation. All rights reserved. 
// 
////////////////////////////////////////////////////////////////////////// 
#define INITGUID 
#include <windows.h> 
 
#include "dactl.h" 
#include "ctlhost.h" 
#include "resource.h" 
 
#define WINDOW_CLASS    "DRAGGABLE IMAGE" 
#define WINDOW_TITLE    "DRAGGABLE IMAGE" 
 
VARIANT_BOOL fCaptioningOn = FALSE; 
VARIANT_BOOL fStatusOn = TRUE; 
VARIANT_BOOL fToolBarOn = TRUE; 
 
// Local Function Prototypes 
HRESULT loadDXAControl(HWND hwnd); 
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam); 
 
WORD wLastMenuItem; 
CControlHost *ocHost = NULL;               // oc host 
 
////////////////////////////////////////////////////////////////////////// 
// 
//  WinMain 
// 
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrev, LPSTR szCmdLine, int iCmdShow) 
{ 
    WNDCLASS    wndclass; 
    MSG         msg; 
    HWND        hwnd; 
    OleInitialize(NULL); 
 
    wndclass.style              = CS_OWNDC; 
    wndclass.lpfnWndProc        = WndProc; 
    wndclass.cbClsExtra         = 0; 
    wndclass.cbWndExtra         = sizeof(LONG)*4; 
    wndclass.hInstance          = hInstance; 
    wndclass.hIcon              = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON1)); 
    wndclass.hCursor            = LoadCursor(NULL, IDC_ARROW); 
    wndclass.hbrBackground      = (HBRUSH)GetStockObject(LTGRAY_BRUSH); 
    wndclass.lpszMenuName       = NULL; 
    wndclass.lpszClassName      = WINDOW_CLASS; 
 
    RegisterClass(&wndclass); 
 
    hwnd = CreateWindow(WINDOW_CLASS, 
                        WINDOW_TITLE, 
                        WS_OVERLAPPED| 
                        WS_SYSMENU, 
                        CW_USEDEFAULT, 
                        CW_USEDEFAULT, 
                        300, 
                        300, 
                        NULL, 
                        NULL, 
                        hInstance, 
                        NULL); 
 
    ocHost = new CControlHost(NULL); 
 
    if (!ocHost) 
        return FALSE; 
 
    // Load the control. 
    if(FAILED(loadDXAControl(hwnd)) ) 
         return FALSE; 
 
    ShowWindow(hwnd, SW_SHOW); 
    UpdateWindow(hwnd); 
 
    while (GetMessage(&msg, NULL, 0, 0)) 
    { 
        TranslateMessage(&msg); 
        DispatchMessage(&msg); 
    } 
 
    OleUninitialize(); 
 
    return (msg.wParam); 
} 
 
////////////////////////////////////////////////////////////////////////// 
HRESULT loadDXAControl(HWND hwnd) 
{    
    ocHost->SetHwnd(hwnd); 
    return ocHost->CreateControl(); 
} 
 
////////////////////////////////////////////////////////////////////////// 
// 
//  WndProc 
// 
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) 
{ 
    if(msg == WM_CLOSE || msg == WM_DESTROY) 
    { 
        if(ocHost) 
        { 
            ocHost->DeleteControl(); 
            ocHost = NULL; 
        } 
        PostQuitMessage(0); 
        return (0); 
    } 
     
    return (DefWindowProc(hwnd, msg, wParam, lParam)); 
}