我正在通过 VS 2008 使用托管 C++。我正在创建一个 Windows 窗体应用程序。该应用程序包含 4 个选项卡。用户希望能够简单地按下功能键(在本例中为 F5、F7、F9 或 F10)。. . 将标签页置于最前面。
我知道我必须捕获 KeyDown 事件。这很好用。我知道这一点是因为我在我的 KeyDown 事件处理程序中转储了一些 MessageBox::Show,果然,当按下功能键时,我收到了我的消息。
然而,问题/困境是我似乎无法获得与按下的功能键相对应的 TabPage 以实际成为选定的标签页。我努力了 。. . “BringToFront”、“Focus”、“Enter”和“Click”。这些似乎都无法将 TabPage 放在前面。
这是我的 C++ 代码。. .
System::Void frmBadgeScan_GeneralKeyDown(System::Object^ sender, System::Windows::Forms::KeyEventArgs^ e)
{
switch (e->KeyCode)
{
case System::Windows::Forms::Keys::F3:
e->Handled = true ;
if (CurrentTab->Name->Equals("tabEmployeeScanOut"))
btnClearOutList_Click (sender, nullptr) ;
else if (CurrentTab->Name->Equals("tabEmployeeScanIn"))
btnClearInList_Click (sender, nullptr) ;
break ;
case System::Windows::Forms::Keys::F5:
e->Handled = true ;
MessageBox::Show("F5") ;
//this->tabEmployeeScanOut->BringToFront () ;
//this->tabEmployeeScanOut->Focus () ;
//tabEmployeeScanOut_Enter (sender, nullptr) ;
break ;
case System::Windows::Forms::Keys::F9:
e->Handled = true ;
MessageBox::Show("F9") ;
//this->tabEmployeeScanIn->BringToFront () ;
//this->tabEmployeeScanIn->Focus () ;
//tabEmployeeScanIn_Enter (sender, nullptr) ;
break ;
}
}
System::Void tabEmployeeScanIn_Enter(System::Object^ sender, System::EventArgs^ e)
{
CurrentTab = this->tabEmployeeScanIn ;
SendKeys::Send("{Tab}") ;
}
System::Void tabEmployeeScanOut_Enter(System::Object^ sender, System::EventArgs^ e)
{
CurrentTab = this->tabEmployeeScanOut ;
SendKeys::Send("{Tab}") ;
}
有任何想法吗?
顺便说一句,变量“CurrentTab”定义为 . . .
TabPage ^ CurrentTab ;
在此先感谢您的帮助!
哦,表单上的所有控件都定义为捕获 KeyDown 事件,因此无论哪个控件关注表单,都会触发 KeyDown 事件。. .
像这样。. .
this->stsBadgeScan->KeyDown += gcnew System::Windows::Forms::KeyEventHandler(this, &frmBadgeScan::frmBadgeScan_GeneralKeyDown);
this->tabMainMenu->KeyDown += gcnew System::Windows::Forms::KeyEventHandler(this, &frmBadgeScan::frmBadgeScan_GeneralKeyDown);
this->btnClearOutList->KeyDown += gcnew System::Windows::Forms::KeyEventHandler(this, &frmBadgeScan::frmBadgeScan_GeneralKeyDown);
this->lstScanOut->KeyDown += gcnew System::Windows::Forms::KeyEventHandler(this, &frmBadgeScan::frmBadgeScan_GeneralKeyDown);
this->txtEmplNumScanOut->KeyDown += gcnew System::Windows::Forms::KeyEventHandler(this, &frmBadgeScan::frmBadgeScan_GeneralKeyDown);
this->KeyDown += gcnew System::Windows::Forms::KeyEventHandler(this, &frmBadgeScan::frmBadgeScan_GeneralKeyDown);