Control.ProcessDialogChar Method
Processes a dialog character.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
[UIPermissionAttribute(SecurityAction.LinkDemand, Window = UIPermissionWindow.AllWindows)] [UIPermissionAttribute(SecurityAction.InheritanceDemand, Window = UIPermissionWindow.AllWindows)] protected virtual bool ProcessDialogChar( char charCode )
Parameters
- charCode
- Type: System.Char
The character to process.
Return Value
Type: System.Booleantrue if the character was processed by the control; otherwise, false.
This method is called during message preprocessing to handle dialog characters, such as control mnemonics. This method is called only if the IsInputChar method indicates that the control is not processing the character. The ProcessDialogChar method simply sends the character to the parent's ProcessDialogChar method, or returns false if the control has no parent. The Form class overrides this method to perform actual processing of dialog characters. This method is only called when the control is hosted in a Windows Forms application or as an ActiveX control.
Notes to InheritorsWhen overriding the ProcessDialogChar method in a derived class, a control should return true to indicate that it has processed the character. For characters that are not processed by the control, the result of calling the base class's ProcessDialogChar method should be returned. Controls will seldom, if ever, need to override this method.
- UIPermission
for all windows for inheriting classes to call this method. Associated enumeration: AllWindows value of UIPermissionWindow.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
