您的位置:首页 > 其它

在DBGRID或者STRINGGRID中实现用滚轮进行翻页的功能

2006-03-27 15:08 441 查看
你先在窗体上放一个TApplicationEvents控件(Delphi自带的),找到WmMouseWheelMessage事件。

下面是我实现的(这个用的是键盘的上下按键消息,你也可以改成滚动条消息)。

procedure TMainForm.WmMouseWheelMessage(var Msg: tagMSG;
var Handled: Boolean);
begin
if (DBGrid.Focused) And (Msg.message = WM_MOUSEWHEEL) then
begin
if Msg.wParam > 0 then
SendMessage(DBGrid.Handle, WM_KEYDOWN, VK_UP, 0)
else
SendMessage(DBGrid.Handle, WM_KEYDOWN, VK_DOWN, 0);
Handled := True;
end;
end;
-------------------------------------------------------------------------
问题解决,特别感谢barely(一哥)
DBGRID这么写,先加一个TApplicationEvents,
procedure TForm1.ApplicationEvents1Message(var Msg: tagMSG;
var Handled: Boolean);
begin
if (DBGrid1.Focused) And (Msg.message = WM_MOUSEWHEEL) then
begin
if Msg.wParam > 0 then
SendMessage(DBGrid1.Handle, WM_KEYDOWN, VK_UP, 0)
else
SendMessage(DBGrid1.Handle, WM_KEYDOWN, VK_DOWN, 0);
Handled := True;
end;
end;
stringgrid这么写
procedure TForm1.ApplicationEvents1Message(var Msg: tagMSG;
var Handled: Boolean);

取消列的排序tvDetail.DataController.GetItemByFieldName('ItemID').SortOrder := soNone;
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: