CFile类打开文件的有趣现象

今天做了很多工作啊，只学了一个控件，CComboBox

CComboBox可以直接就绑定在控件里面，原来每个控件都可以Value或者Control两种性质的变量的。

然后，CComboBox控件，直接使用的时候，下拉的长度，要点点它的下箭头，然后拉到多长就多长，这个问题我弄了好半天才发现咯。

比较重要的

AddString 增加一个选择。

GetCount 取得一共有多少个选择在里面

GetCurSel 返回选中的选项的index值

GetLBText 根据index值取得该选择的内容。。。

ResetContent 清空CComboBox里面的东西

 

CComboBox Class Members

Construction/Destruction
Initialization
General Operations
String Operations
Overridables

Construction

CComboBox Constructs a CComboBox object.

Initialization

Create Creates the combo box and attaches it to the CComboBox object. InitStorage Preallocates blocks of memory for items and strings in the list-box portion of the combo box.

General Operations

GetCount Retrieves the number of items in the list box of a combo box. GetCurSel Retrieves the index of the currently selected item, if any, in the list box of a combo box. SetCurSel Selects a string in the list box of a combo box. GetEditSel Gets the starting and ending character positions of the current selection in the edit control of a combo box. SetEditSel Selects characters in the edit control of a combo box. SetItemData Sets the 32-bit value associated with the specified item in a combo box. SetItemDataPtr Sets the 32-bit value associated with the specified item in a combo box to the specified pointer (void*). GetItemData Retrieves the application-supplied 32-bit value associated with the specified combo-box item. GetItemDataPtr Retrieves the application-supplied 32-bit value associated with the specified combo-box item as a pointer (void*). GetTopIndex Returns the index of the first visible item in the list-box portion of the combo box. SetTopIndex Tells the list-box portion of the combo box to display the item with the specified index at the top. SetHorizontalExtent Sets the width in pixels that the list-box portion of the combo box can be scrolled horizontally. GetHorizontalExtent Returns the width in pixels that the list-box portion of the combo box can be scrolled horizontally. SetDroppedWidth Sets the minimum allowable width for the drop-down list-box portion of a combo box. GetDroppedWidth Retrieves the minimum allowable width for the drop-down list-box portion of a combo box. Clear Deletes (clears) the current selection (if any) in the edit control. Copy Copies the current selection (if any) onto the Clipboard in CF_TEXT format. Cut Deletes (cuts) the current selection, if any, in the edit control and copies the deleted text onto the Clipboard in CF_TEXT format. Paste Inserts the data from the Clipboard into the edit control at the current cursor position. Data is inserted only if the Clipboard contains data in CF_TEXT format. LimitText Limits the length of the text that the user can enter into the edit control of a combo box. SetItemHeight Sets the height of list items in a combo box or the height of the edit-control (or static-text) portion of a combo box. GetItemHeight Retrieves the height of list items in a combo box. GetLBText Gets a string from the list box of a combo box. GetLBTextLen Gets the length of a string in the list box of a combo box. ShowDropDown Shows or hides the list box of a combo box that has the CBS_DROPDOWN or CBS_DROPDOWNLIST style. GetDroppedControlRect Retrieves the screen coordinates of the visible (dropped-down) list box of a drop-down combo box. GetDroppedState Determines whether the list box of a drop-down combo box is visible (dropped down). SetExtendedUI Selects either the default user interface or the extended user interface for a combo box that has the CBS_DROPDOWN or CBS_DROPDOWNLIST style. GetExtendedUI Determines whether a combo box has the default user interface or the extended user interface. GetLocale Retrieves the locale identifier for a combo box. SetLocale Sets the locale identifier for a combo box.

String Operations

AddString Adds a string to the end of the list in the list box of a combo box or at the sorted position for list boxes with the CBS_SORT style. DeleteString Deletes a string from the list box of a combo box. InsertString Inserts a string into the list box of a combo box. ResetContent Removes all items from the list box and edit control of a combo box. Dir Adds a list of filenames to the list box of a combo box. FindString Finds the first string that contains the specified prefix in the list box of a combo box. FindStringExact Finds the first list-box string (in a combo box) that matches the specified string. SelectString Searches for a string in the list box of a combo box and, if the string is found, selects the string in the list box and copies the string to the edit control.

Overridables

DrawItem Called by the framework when a visual aspect of an owner-draw combo box changes. MeasureItem Called by the framework to determine combo box dimensions when an owner-draw combo box is created. CompareItem Called by the framework to determine the relative position of a new list item in a sorted owner-draw combo box. DeleteItem Called by the framework when a list item is deleted from an owner-draw combo box.

CComboBox Overview |  Base Class Members |  Hierarchy Chart