2408gui,wtl给对话框加快捷键

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原文

使用代码

给快捷键声明一个句柄,并添加CMessageFilter.

#pragma once
class CMainDlg : public CDialogImpl<CMainDlg>,public CUpdateUI<CMainDlg>,public CMessageFilter,//..public CIdleHandler
{
private:HACCEL    m_haccelerator;//..
//.......
};

然后在OnInitDialog中,给快捷键资源赋值m_haccelerator变量,在此例中为IDR_MAINFRAME.

LRESULT CMainDlg::OnInitDialog(UINT /*`uMsg`*/, WPARAM /*`wParam`*/,LPARAM /*l参数*/, BOOL& /*b已处理*/)
{//.......绑定键...m_haccelerator = AtlLoadAccelerators(IDR_MAINFRAME);//`注册`对象以过滤消息和空闲更新CMessageLoop* pLoop = _Module.GetMessageLoop();ATLASSERT(pLoop != NULL);pLoop->AddMessageFilter(this);pLoop->AddIdleHandler(this);//...............return TRUE;
}

然后要重载PreTranslateMessage函数.

BOOL CMainDlg::PreTranslateMessage(MSG* pMsg)
{if(m_haccelerator != NULL){if(::TranslateAccelerator(m_hWnd, m_haccelerator, pMsg))return TRUE;}return CWindow::IsDialogMessage(pMsg);
}

此外,在构造器中,初化快捷键的句柄.

CMainDlg::CMainDlg()
{//..................m_haccelerator = NULL;//..................
}

如果未按无模式设置对话框,则需要按无模式,才能使PreTranslateMessage正常工作.这很容易…

int WINAPI _tWinMain(HINSTANCE hInstance,HINSTANCE /*`hPrev`实例*/, LPTSTR lpstrCmdLine, int nCmdShow)
{_Module.Init(NULL, hInstance);CMessageLoop myMessageLoop;_Module.AddMessageLoop(&myMessageLoop);CMainDlg dlgMain;dlgMain.Create(NULL);dlgMain.ShowWindow(nCmdShow);int retValue = myMessageLoop.Run();_Module.RemoveMessageLoop();_Module.Term();return retValue;
}