如何获取控件放置在MFC对话框中的大小和位置？ [英] How to get size and location of a control placed on a dialog in MFC?

问题描述

我有指向控件的指针

CWnd* CWnd::GetDlgItem(int ITEM_ID)

所以我有 CWnd * 到控制，
，但根本找不到 CWnd 类中的任何方法，将
检索给定控件的大小和位置。
任何帮助？

so i've got CWnd* pointer which points to the control, but simply can't find any method within CWnd class that will retrieve the size and location of a given control. Any help?

推荐答案

CRect rect;
CWnd *pWnd = pDlg->GetDlgItem(YOUR_CONTROL_ID);
pWnd->GetWindowRect(&rect);
pDlg->ScreenToClient(&rect); //optional step - see below

//position:  rect.left, rect.top
//size: rect.Width(), rect.Height()

GetWindowRect 给出控件的屏幕坐标。 pDlg-> ScreenToClient 会将它们转换为相对于对话框的客户区域，这通常是您需要的。

GetWindowRect gives the screen coordinates of the control. pDlg->ScreenToClient will then convert them be relative to the dialog's client area, which is usually what you need.

注意： pDlg 上面是对话框。如果你是对话框类的成员函数，只需删除 pDlg-> 。

Note: pDlg above is the dialog. If you're in a member function of the dialog class, just remove the pDlg->.

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