请问，我有个列表需要显示。由于该列表有两百多列，共1000多条数据，所以想用CListCtrl的Owner draw提高效率。
我在资源编辑器中选好了ListCtrl的owner data选项，代码中设置好了列，之后调用SetItemCount(1000)触发重画。
我发现我的行数据可以根据当前显示的位置来重画，但是列数据每次都是从头画到尾。例如我有1000行数据，每条数据200列，每屏幕显示10行，相应LVN_GETDISPINFO消息，发现可以只画1～10行，但是每行都画满了200列（我的屏幕每屏只能显示5列）。请问如何设置CListCtrl才能可以使列数据在显示的时候才重画？谢谢。
我在资源编辑器中选好了ListCtrl的owner data选项，代码中设置好了列，之后调用SetItemCount(1000)触发重画。
我发现我的行数据可以根据当前显示的位置来重画，但是列数据每次都是从头画到尾。例如我有1000行数据，每条数据200列，每屏幕显示10行，相应LVN_GETDISPINFO消息，发现可以只画1～10行，但是每行都画满了200列（我的屏幕每屏只能显示5列）。请问如何设置CListCtrl才能可以使列数据在显示的时候才重画？谢谢。
NMHDR hdr;
LVITEM item;
} NMLVDISPINFO, *LPNMLVDISPINFO;LVITEM Structure--------------------------------------------------------------------------------Specifies or receives the attributes of a list-view item. This structure has been updated to support a new mask value (LVIF_INDENT) that enables item indenting. This structure supersedes the LV_ITEM structure.Syntaxtypedef struct _LVITEM {
UINT mask;
int iItem;
int iSubItem;
UINT state;
UINT stateMask;
LPTSTR pszText;
int cchTextMax;
int iImage;
LPARAM lParam;
#if (_WIN32_IE >= 0x0300)
int iIndent;
#endif
#if (_WIN32_IE >= 0x560)
int iGroupId;
UINT cColumns; // tile view columns
PUINT puColumns;
#endif
} LVITEM, *LPLVITEM; Membersmask
Set of flags that specify which members of this structure contain data to be set or which members are being requested. This member can have one or more of the following flags set:
LVIF_COLUMNS
The cColumns member is valid or must be filled in.
LVIF_DI_SETITEM
The operating system should store the requested list item information and not ask for it again. This flag is used only with the LVN_GETDISPINFO notification message.
LVIF_GROUPID
The iGroupId member is valid or must be filled in.
LVIF_IMAGE
The iImage member is valid or must be filled in.
LVIF_INDENT
The iIndent member is valid or must be filled in.
LVIF_NORECOMPUTE
The control will not generate LVN_GETDISPINFO to retrieve text information if it receives an LVM_GETITEM message. Instead, the pszText member will contain LPSTR_TEXTCALLBACK.
LVIF_PARAM
The lParam member is valid or must be filled in.
LVIF_STATE
The state member is valid or must be filled in.
LVIF_TEXT
The pszText member is valid or must be filled in.
iItem
Zero-based index of the item to which this structure refers.
iSubItem
One-based index of the subitem to which this structure refers, or zero if this structure refers to an item rather than a subitem.
state
Indicates the item's state, state image, and overlay image. The stateMask member indicates the valid bits of this member. Bits 0 through 7 of this member contain the item state flags. This can be one or more of the item state values.Bits 8 through 11 of this member specify the one-based overlay image index. Both the full-sized icon image list and the small icon image list can have overlay images. The overlay image is superimposed over the item's icon image. If these bits are zero, the item has no overlay image. To isolate these bits, use the LVIS_OVERLAYMASK mask. To set the overlay image index in this member, you should use the INDEXTOOVERLAYMASK macro. The image list's overlay images are set with the ImageList_SetOverlayImage function.Bits 12 through 15 of this member specify the state image index. The state image is displayed next to an item's icon to indicate an application-defined state. If these bits are zero, the item has no state image. To isolate these bits, use the LVIS_STATEIMAGEMASK mask. To set the state image index, use the INDEXTOSTATEIMAGEMASK macro. The state image index specifies the index of the image in the state image list that should be drawn. The state image list is specified with the LVM_SETIMAGELIST message.
stateMask
Value specifying which bits of the state member will be retrieved or modified. For example, setting this member to LVIS_SELECTED will cause only the item's selection state to be retrieved. This member allows you to modify one or more item states without having to retrieve all of the item states first. For example, setting this member to LVIS_SELECTED and state to zero will cause the item's selection state to be cleared, but none of the other states will be affected. To retrieve or modify all of the states, set this member to (UINT)-1.You can use the macro ListView_SetItemState both to set and to clear bits.
pszText
If the structure specifies item attributes, pszText is a pointer to a null-terminated string containing the item text. If the structure receives item attributes, pszText is a pointer to a buffer that receives the item text. If the value of pszText is LPSTR_TEXTCALLBACK, the item is a callback item. If the callback text changes, you must explicitly set pszText to LPSTR_TEXTCALLBACK and notify the list-view control of the change by sending an LVM_SETITEM or LVM_SETITEMTEXT message.Do not set pszText to LPSTR_TEXTCALLBACK if the list-view control has the LVS_SORTASCENDING or LVS_SORTDESCENDING style.
cchTextMax
Number of characters in the buffer pointed to by pszText. This member is only used when the structure receives item attributes. It is ignored when the structure specifies item attributes.
iImage
Index of the item's icon in the control's image list. This applies to both the large and small image list. If this member is the I_IMAGECALLBACK value, the parent window is responsible for storing the index. In this case, the list-view control sends the parent an LVN_GETDISPINFO notification message to retrieve the index when it needs to display the image.
lParam
Value specific to the item. If you use the LVM_SORTITEMS message, the list-view control passes this value to the application-defined comparison function. You can also use the LVM_FINDITEM message to search a list-view control for an item with a specified lParam value.
iIndent
Version 4.70. Number of image widths to indent the item. A single indentation equals the width of an item image. Therefore, the value 1 indents the item by the width of one image, the value 2 indents by two images, and so on. Note that this field is supported only for items. Attempting to set subitem indentation will cause the calling function to fail.
iGroupId
Version 6.0 Identifier of the tile view group that receives the item.
cColumns
Version 6.0 Number of tile view columns to display for this item.
puColumns;
Version 6.0 Pointer to the array of column indices; length of cColumns.
Res让Flags包含LVIF_COLUMNS,同时设置 cColumns和puColumns.
int iGroupId;
UINT cColumns; // tile view columns
PUINT puColumns;不过，仍然感谢各位老大的帮助。谢谢DentistryDoctor， 谢谢蒋晟。