CBN_DROPDOWN WPARAM wParam; LPARAM lParam; 參數 wParam LOWORD 包含下拉式方塊的控制標識碼。 HIWORD 會指定通知程序代碼。 lParam 下拉式方塊的句柄。 備註 只有在下拉式方塊具有CBS_DROPDOWN或CBS_DROPDOWNLIST樣式時,才會傳送此通知程序代碼。 需求 展開資料表 需求值 最低支援的用戶端 Windows Vista [僅...
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam); hwndComboBox = (HWND) lParam; Parameters idComboBox Identifier of the combo box. hwndComboBox Handle to the combo box. Return Value None. Remarks This message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style....
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam); hwndComboBox = (HWND) lParam; Parameters idComboBox Identifier of the combo box. hwndComboBox Handle to the combo box. Return Value None. Remarks This message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style....
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam); hwndComboBox = (HWND) lParam; ParametersidComboBox Identifier of the combo box.hwndComboBox Handle to the combo box.Return ValueNone.RemarksThis message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style.Requirements...
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam); hwndComboBox = (HWND) lParam; ParametersidComboBox Identifier of the combo box.hwndComboBox Handle to the combo box.Return ValueNone.RemarksThis message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style.Requirements...
CBN_DROPDOWN WPARAM wParam; LPARAM lParam; 参数wParam LOWORD 包含组合框的控件标识符。 HIWORD 用于指定通知代码。 lParam 组合框的句柄。备注仅当组合框具有 CBS_DROPDOWN 或CBS_DROPDOWNLIST 样式时,才会发送此通知代码。要求展开表 要求值 最低受支持的客户端 Windows Vista [仅限桌面应用] 最低受支持的...
CBN_DROPDOWN WPARAM wParam; LPARAM lParam; 參數 wParam LOWORD 包含下拉式方塊的控制標識碼。 HIWORD 會指定通知程序代碼。 lParam 下拉式方塊的句柄。 備註 只有在下拉式方塊具有CBS_DROPDOWN或CBS_DROPDOWNLIST樣式時,才會傳送此通知程序代碼。 需求 展開表格 需求值 最低支援的用戶端 Windows Vista [僅限...
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam); hwndComboBox = (HWND) lParam; ParametersidComboBox Identifier of the combo box.hwndComboBox Handle to the combo box.Return ValueNone.RemarksThis message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style.Requirements...
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam); hwndComboBox = (HWND) lParam; ParametersidComboBox Identifier of the combo box.hwndComboBox Handle to the combo box.Return ValueNone.RemarksThis message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style.Requirements...
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam); hwndComboBox = (HWND) lParam; Parameters idComboBox Identifier of the combo box. hwndComboBox Handle to the combo box. Return Value None. Remarks This message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style....