Full screen dialogs

最新推荐文章于 2025-05-24 09:00:17 发布

原创最新推荐文章于 2025-05-24 09:00:17 发布 · 696 阅读

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文章标签：

#border #dialog #up #null

本文介绍了一种简单的方法来创建全屏对话框，通过移除窗口标题栏和边框，并使用SetWindowPos调整窗口位置及大小以覆盖整个屏幕。这种方法适用于需要全屏显示对话框的应用场景。

Full screen dialogs

Sometimes you might feel the need to make a full screen dialog - means a dialog that fills up the entire monitor. Well it's rather easy to achieve this. You need to remove the caption and the border which we do by removing the WS_CAPTION and the WS_BORDER styles. Then we call SetWindowPos with HWND_TOPMOST and resize the dialog to fill up the entire screen. Just put the following code into your OnInitDialog function.

BOOL CFullScrDlgDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    //...

    int cx, cy; 
    HDC dc = ::GetDC(NULL); 
    cx = GetDeviceCaps(dc,HORZRES) + 
        GetSystemMetrics(SM_CXBORDER); 
    cy = GetDeviceCaps(dc,VERTRES) +
        GetSystemMetrics(SM_CYBORDER); 
    ::ReleaseDC(0,dc); 

    // Remove caption and border
    SetWindowLong(m_hWnd, GWL_STYLE, 
        GetWindowLong(m_hWnd, GWL_STYLE) & 
    (~(WS_CAPTION | WS_BORDER))); 

    // Put window on top and expand it to fill screen
    ::SetWindowPos(m_hWnd, HWND_TOPMOST, 
        -(GetSystemMetrics(SM_CXBORDER)+1), 
        -(GetSystemMetrics(SM_CYBORDER)+1), 
        cx+1,cy+1, SWP_NOZORDER); 

    //...

    return TRUE; 
}