VSFlexGrid 怎么实现内容跟随滚轮移动
VSFlexGrid 如何实现内容跟随滚轮移动
VSFlexGrid 如何实现表格内容跟随滚轮移动,而且VSFlexGrid有个问题就是你点那滚动条的时候,为什么要等到鼠标放开才显示所在位置的内容?
------解决方案--------------------
Private Sub fg_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
fg.Redraw = flexRDBuffered
fg.SelectionMode = flexSelectionByRow
fg.Row = fg.MouseRow
fg.BackColorSel = &H88FFB5
End Sub
是不是这个意思？
------解决方案--------------------
< < < <VSFlexGrid有个问题就是你点那滚动条的时候,为什么要等到鼠标放开才显示所在位置的内容?
> > > >
vsflexgrid有个属性scrolltrack默认设置为False 设成True就行了
跟随滚轮的话应该本来就行啊
不过需要grid得到焦点
------解决方案--------------------
用子类拦截窗口WM_MOUSEWHEEL消息
WM_MOUSEWHEEL
The WM_MOUSEWHEEL message is sent to the focus window when the mouse wheel is rotated. The DefWindowProc function propagates the message to the window 's parent. There should be no internal forwarding of the message, since DefWindowProc propagates it up the parent chain until it finds a window that processes it.
WM_MOUSEWHEEL
fwKeys = LOWORD(wParam); // key flags
zDelta = (short) HIWORD(wParam); // wheel rotation
xPos = (short) LOWORD(lParam); // horizontal position of pointer
yPos = (short) HIWORD(lParam); // vertical position of pointer
Parameters
fwKeys
Value of the low-order word of wParam. Indicates whether various virtual keys are down. This parameter can be any combination of the following values: Value Description
MK_CONTROL Set if the ctrl key is down.
MK_LBUTTON Set if the left mouse button is down.
MK_MBUTTON Set if the middle mouse button is down.
MK_RBUTTON Set if the right mouse button is down.
MK_SHIFT Set if the shift key is down.
zDelta
The value of the high-order word of wParam. Indicates the distance that the wheel is rotated, expressed in multiples or divisions of WHEEL_DELTA, which is 120. A positive value indicates that the wheel was rotated forward, away from the user; a negative value indicates that the wheel was rotated backward, toward the user.
xPos
Value of the low-order word of lParam. Specifies the x-coordinate of the pointer, relative to the upper-left corner of the screen.
yPos
Value of the high-order word of lParam. Specifies the y-coordinate of the pointer, relative to the upper-left corner of the screen.
Remarks
The zDelta parameter will be a multiple of WHEEL_DELTA, which is set at 120. This is the threshold for action to be taken, and one such action (for example, scrolling one increment) should occur for each delta.
The delta was set to 120 to allow Microsoft or other vendors to build finer-resolution wheels in the future, including perhaps a freely-rotating wheel with no notches. The expectation is that such a device would send more messages per rotation, but with a smaller value in each message. To support this possibility, you should either add the incoming delta values until WHEEL_DELTA is reached (so for a given delta-rotation you get the same response), or scroll partial lines in response to the more frequent messages. You could also choose your scroll granularity and accumulate deltas until it is reached.
VSFlexGrid 如何实现表格内容跟随滚轮移动,而且VSFlexGrid有个问题就是你点那滚动条的时候,为什么要等到鼠标放开才显示所在位置的内容?
------解决方案--------------------
Private Sub fg_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
fg.Redraw = flexRDBuffered
fg.SelectionMode = flexSelectionByRow
fg.Row = fg.MouseRow
fg.BackColorSel = &H88FFB5
End Sub
是不是这个意思？
------解决方案--------------------
< < < <VSFlexGrid有个问题就是你点那滚动条的时候,为什么要等到鼠标放开才显示所在位置的内容?
> > > >
vsflexgrid有个属性scrolltrack默认设置为False 设成True就行了
跟随滚轮的话应该本来就行啊
不过需要grid得到焦点
------解决方案--------------------
用子类拦截窗口WM_MOUSEWHEEL消息
WM_MOUSEWHEEL
The WM_MOUSEWHEEL message is sent to the focus window when the mouse wheel is rotated. The DefWindowProc function propagates the message to the window 's parent. There should be no internal forwarding of the message, since DefWindowProc propagates it up the parent chain until it finds a window that processes it.
WM_MOUSEWHEEL
fwKeys = LOWORD(wParam); // key flags
zDelta = (short) HIWORD(wParam); // wheel rotation
xPos = (short) LOWORD(lParam); // horizontal position of pointer
yPos = (short) HIWORD(lParam); // vertical position of pointer
Parameters
fwKeys
Value of the low-order word of wParam. Indicates whether various virtual keys are down. This parameter can be any combination of the following values: Value Description
MK_CONTROL Set if the ctrl key is down.
MK_LBUTTON Set if the left mouse button is down.
MK_MBUTTON Set if the middle mouse button is down.
MK_RBUTTON Set if the right mouse button is down.
MK_SHIFT Set if the shift key is down.
zDelta
The value of the high-order word of wParam. Indicates the distance that the wheel is rotated, expressed in multiples or divisions of WHEEL_DELTA, which is 120. A positive value indicates that the wheel was rotated forward, away from the user; a negative value indicates that the wheel was rotated backward, toward the user.
xPos
Value of the low-order word of lParam. Specifies the x-coordinate of the pointer, relative to the upper-left corner of the screen.
yPos
Value of the high-order word of lParam. Specifies the y-coordinate of the pointer, relative to the upper-left corner of the screen.
Remarks
The zDelta parameter will be a multiple of WHEEL_DELTA, which is set at 120. This is the threshold for action to be taken, and one such action (for example, scrolling one increment) should occur for each delta.
The delta was set to 120 to allow Microsoft or other vendors to build finer-resolution wheels in the future, including perhaps a freely-rotating wheel with no notches. The expectation is that such a device would send more messages per rotation, but with a smaller value in each message. To support this possibility, you should either add the incoming delta values until WHEEL_DELTA is reached (so for a given delta-rotation you get the same response), or scroll partial lines in response to the more frequent messages. You could also choose your scroll granularity and accumulate deltas until it is reached.