CheckListBoxCheckAll (C++)

Description

This example demostrates the use of some Check box list methods. Example assumes you have a TCheckListBox and two buttons on the form.

Code

__fastcall TMainForm::TMainForm(TComponent* Owner)
	: TForm(Owner)
{
	/* Add a few check boxes to the list. */
	CheckListBox->Items->Add("Option 1");
	CheckListBox->Items->Add("Option 2");
	CheckListBox->Items->Add("Option 3");
	CheckListBox->Items->Add("Option 4");

	/* Allow the user to set the check boxes into the grayed state. */
	CheckListBox->AllowGrayed = true;

	/* Make the first check box dimmed. */
	CheckListBox->State[0] = cbGrayed;

	/* Make the second check box disabled. */
	CheckListBox->ItemEnabled[1] = false;
}

void __fastcall TMainForm::btCheckAllClick(TObject *Sender)
{
	/* Check all the check boxes in the list.
		Do not change the state of the dimmed check box. */
	CheckListBox->CheckAll(cbChecked, false, true);
}

void __fastcall TMainForm::btUncheckAllClick(TObject *Sender)
{
	/* Uncheck all the check boxes in the list.
		Do not touch disabled check boxes. */
	CheckListBox->CheckAll(cbUnchecked, true, false);
}

Uses

• Vcl.CheckLst.TCheckListBox.AllowGrayed ( fr | de | ja )
• Vcl.CheckLst.TCheckListBox.State ( fr | de | ja )
• Vcl.CheckLst.TCheckListBox.ItemEnabled ( fr | de | ja )
• Vcl.CheckLst.TCheckListBox.CheckAll ( fr | de | ja )