Create different SDI windows

最新推荐文章于 2025-01-01 20:40:54 发布

转载最新推荐文章于 2025-01-01 20:40:54 发布 · 88 阅读

本文介绍了如何使用MFC创建多个文档界面(MDI)应用程序的方法。通过初始化实例并定义不同的文档模板，可以创建不同类型的MDI窗口。此外，还提供了一个帮助函数OnFileNew，用于根据指定的索引打开新的文档实例。

Create different SDI windows
1. BOOL CtestMDIApp::InitInstance()

CMultiDocTemplate* pDocTemplate;
pDocTemplate = new CMultiDocTemplate(IDR_testMDITYPE,
  RUNTIME_CLASS(CtestMDIDoc),
  RUNTIME_CLASS(CChildFrame), // custom MDI child frame
  RUNTIME_CLASS(CtestMDIView));
AddDocTemplate(pDocTemplate);

pDocTemplate = new CMultiDocTemplate(IDR_testMDITYPE, //IDR_View1TYPE,
  RUNTIME_CLASS(CtestMDIDoc),
  RUNTIME_CLASS(CChildFrame), // custom MDI child frame
  RUNTIME_CLASS(CView1));
AddDocTemplate(pDocTemplate);

2. void CMainFrame::OnHelp1()

static
void OnFileNew(CDocManager* mgr, UINT nIdx)
{
POSITION pos = mgr->GetFirstDocTemplatePosition();
CDocTemplate* pTemplate = 0;
for (UINT i=0; i<=nIdx && pos != NULL; i++)
{
pTemplate = mgr->GetNextDocTemplate(pos);
ASSERT_KINDOF(CDocTemplate, pTemplate);
}

if(!pTemplate)
return;

ASSERT(pTemplate != NULL);
ASSERT_KINDOF(CDocTemplate, pTemplate);

pTemplate->OpenDocumentFile(NULL);
// if returns NULL, the user has already been alerted
}

// CMainFrame message handlers

void CMainFrame::OnHelp1()
{
OnFileNew(AfxGetApp()->m_pDocManager, 0);
}