禁止编辑框粘贴数据

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I found 2 ways of solving the problem....please check the below... 1st method: class CNoPasteEdit: public CEdit { public: CNoPasteEdit(); ~CNoPasteEdit(); protected: // This line will need to be added by hand because WM_PASTE is not available in // class wizard afx_msg LRESULT OnPaste(WPARAM wParam, LPARAM lParam); afx_msg void OnContextMenu(CWnd* pWnd, CPoint point); DECLARE_MESSAGE_MAP() }; Then you will need to edit the .cpp file for this class like so CNoPasteEdit::CNoPasteEdit(){ // Put any construction code here } CNoPasteEdit:~:CNoPasteEdit(){ // Put any destruction code here } BEGIN_MESSAGE_MAP(CNoPasteEdit, CEdit) // This line is needed because there is no default macro for WM_PASTE messages // This line will also need to be added by hand ON_MESSAGE(WM_PASTE, OnPaste) ON_WM_CONTEXTMENU() END_MESSAGE_MAP() LRESULT CNoPasteEdit::OnPaste(WPARAM wParam, LPARAM lParam){ // Put any code here you want to execute when the user right clicks on the edit // control. Just leave it blank to disable the menu } void CNoPasteEdit::OnContextMenu(CWnd* pWnd, CPoint point){ // Put any code here you want to execute when the user tries to paste into the edit // conrtol. Just leave it blank to prevent pasting. } 2nd method: Handle the ON_EN_CHANGE event and capture the text in the CString and check if its more than the limited character..if its..you can clear the text box with a warning message...