CTaskDialog::AddCommandControl

项目
03/01/2013

添加新的命令按钮控件。CTaskDialog。

void AddCommandControl(
   int nCommandControlID,
   const CString& strCaption,
   BOOL bEnabled = TRUE,
   BOOL bRequiresElevation = FALSE
);

参数

[in] nCommandControlID
命令控件ID号。
[in] strCaption
CTaskDialog 显示给用户的字符串。使用此字符串解释该命令的用途。
[in] bEnabled
指示的boolean参数新按钮是否启用或禁用。
[in] bRequiresElevation
指示的boolean参数命令是否需要提升。

备注

CTaskDialog类选件可以显示数量没有限制的命令按钮控件。但是，因此，如果 CTaskDialog 显示任何命令按钮控件，则可显示最多六个按钮。如果 CTaskDialog 没有命令按钮控件，则可显示数量没有限制的按钮。

当用户选择一个命令按钮控件时，CTaskDialog 关闭。使用 CTaskDialog::DoModal，如果应用程序显示对话框，DoModal 返回选定的命令按钮控件的 nCommandControlID。

示例

// TODO: Replace the strings below with the appropriate message, 
// main instruction, and dialog title.
CString message("This is an important message to the user.");
CString mainInstruction("Important!\nPlease read!");
CString title("Alert Dialog");

CTaskDialog taskDialog(message, mainInstruction, title, 
    TDCBF_YES_BUTTON | TDCBF_NO_BUTTON | TDCBF_CANCEL_BUTTON );

taskDialog.AddCommandControl(201, L"First command button control");
taskDialog.AddCommandControl(202, L"Second command button control");
taskDialog.AddCommandControl(203, L"Third command button control");

// Show the CTaskDialog and remember how the user closed it.
int selection = taskDialog.DoModal();

switch(selection)
{
case 201:
    // TODO: Place processing here for the first 
    // command button control.
    break;

case 202:
    // TODO: Place processing here for the second 
    // command button control.
    break;

case 203:
    // TODO: Place processing here for the third 
    // command button control.
    break;

default:
    break;
}

// Remove all the command controls so that we can use the same task
// dialog with new command button controls.
taskDialog.RemoveAllCommandControls();

taskDialog.AddCommandControl(301, 
    L"New first command button control");
taskDialog.AddCommandControl(302, 
    L"New second command button control should require elevation",
    TRUE, TRUE);
taskDialog.AddCommandControl(303, 
    L"New third command button control should be disabled");

// Change the default command button control
taskDialog.SetDefaultCommandControl(302);

// Make sure the third option is disabled.
if (taskDialog.IsCommandControlEnabled(303))
{
    taskDialog.SetCommandControlOptions(303, FALSE);
}

taskDialog.DoModal();

switch(taskDialog.GetSelectedCommandControlID())
{
case 301:
    // TODO: Place processing here for new first 
    // command button control.
    break;

case 302:
    // TODO: Place processing here for new second 
    // command button control.
    break;

case 303:
    // TODO: Place processing here for the new third 
    // command button control.
    break;

default:
    break;
}

// Remove all the command button controls and add new ones from
// the string table resource.
taskDialog.RemoveAllCommandControls();
taskDialog.LoadCommandControls(1001, 1005);