请问高手,如何用API执行鼠标点击事件?

sunming 2000-08-06 03:22:00
请问高手,在VB中Sendkeys可以模拟键盘按击事件,是否有模拟鼠标点击的功能,尤其是通过API执行鼠标点击事件?
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Chen_Lin 2000-08-15
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模拟鼠标的点击
-------------以下在BAS中定义---------------------------
Public Declare Function SetCursorPos Lib "user32" (ByVal X As Long, ByVal Y As Long) As Long
Public Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Public Declare Sub mouse_event Lib "user32" (ByVal dwFlags As Long, ByVal dx As Long, ByVal dy As Long, ByVal cButtons As Long, ByVal dwExtraInfo As Long)
Public Type POINTAPI
X As Long
Y As Long
End Type



Public Const MOUSEEVENTF_LEFTDOWN = &H2 ' left button down
Public Const MOUSEEVENTF_LEFTUP = &H4 ' left button up
-------------------------如下在主程序中,例如点击Combox控件----------------------
'注意是象素
X = (Me.Left + Combo1.Left + Combo1.Width - 15) / 15
'这里要加上标题栏的高度
Y = (Me.Top + Combo1.Top + Combo1.Height * 2 - 15) / 15

SetCursorPos X, Y

mouse_event MOUSEEVENTF_LEFTDOWN, X, Y, 0, 0
mouse_event MOUSEEVENTF_LEFTUP, X, Y, 0, 0
--------------------------结束--------------------------
dirotac 2000-08-14
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tmp = SendMessage(ctrl1.hwnd, &H201, 0, 0),鼠标按下
tmp = SendMessage(ctrl1.hwnd, &H202, 0, 0),鼠标抬起
中间最好加一段延时,看起来更象,整个的按键过程,但是,这个过程不处理按键事件
Keri 2000-08-07
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tmp = SendMessage(Command1.hwnd, WM_LBUTTONDOWN, 0, 0),想command1发送click
sunming 2000-08-06
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csdnmail:
你好:我想知道如何正确使用这个函数:
下面这个MOUSE_EVENT函数说可以向SENDKEYS一样模拟鼠标点击,可是我试验后,虽然有反映但没有激活事件。英文说明如下:
mouse_event
The mouse_event function synthesizes mouse motion and button clicks.

Windows NT: This function has been superseded. Use SendInput instead.

VOID mouse_event(
DWORD dwFlags, // flags specifying various motion/click variants
DWORD dx, // horizontal mouse position or position change
DWORD dy, // vertical mouse position or position change
DWORD dwData, // amount of wheel movement
DWORD dwExtraInfo
// 32 bits of application-defined information
);

Parameters
dwFlags
A set of flag bits that specify various aspects of mouse motion and button clicking. The bits in this parameter can be any reasonable combination of the following values: Value Meaning
MOUSEEVENTF_ABSOLUTE Specifies that the dx and dy parameters contain normalized absolute coordinates. If not set, those parameters contain relative data: the change in position since the last reported position. This flag can be set, or not set, regardless of what kind of mouse or mouse-like device, if any, is connected to the system. For further information about relative mouse motion, see the following Remarks section.
MOUSEEVENTF_MOVE Specifies that movement occurred.
MOUSEEVENTF_LEFTDOWN Specifies that the left button is down.
MOUSEEVENTF_LEFTUP Specifies that the left button is up.
MOUSEEVENTF_RIGHTDOWN Specifies that the right button is down.
MOUSEEVENTF_RIGHTUP Specifies that the right button is up.
MOUSEEVENTF_MIDDLEDOWN Specifies that the middle button is down.
MOUSEEVENTF_MIDDLEUP Specifies that the middle button is up.
MOUSEEVENTF_WHEEL Windows NT: Specifies that the wheel has been moved, if the mouse has a wheel. The amount of movement is given in dwData


dx
Specifies the mouse's absolute position along the x-axis or its amount of motion since the last mouse event was generated, depending on the setting of MOUSEEVENTF_ABSOLUTE. Absolute data is given as the mouse's actual x-coordinate; relative data is given as the number of mickeys moved. A mickey is the amount that a mouse has to move for it to report that it has moved.
dy
Specifies the mouse's absolute position along the y-axis or its amount of motion since the last mouse event was generated, depending on the setting of MOUSEEVENTF_ABSOLUTE. Absolute data is given as the mouse's actual y-coordinate; relative data is given as the number of mickeys moved.
dwData
If dwFlags is MOUSEEVENTF_WHEEL, then dwData specifies the amount of wheel movement. 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. One wheel click is defined as WHEEL_DELTA, which is 120.
If dwFlags is not MOUSEEVENTF_WHEEL, then dwData should be zero.

dwExtraInfo
Specifies an additional 32-bit value associated with the mouse event. An application calls GetMessageExtraInfo to obtain this extra information.
Return Values
This function has no return value.

Remarks
If the mouse has moved, indicated by MOUSEEVENTF_MOVE being set, dx and dy hold information about that motion. The information is given as absolute or relative integer values.

If MOUSEEVENTF_ABSOLUTE value is specified, dx and dy contain normalized absolute coordinates between 0 and 65,535. The event procedure maps these coordinates onto the display surface. Coordinate (0,0) maps onto the upper-left corner of the display surface, (65535,65535) maps onto the lower-right corner.

If the MOUSEEVENTF_ABSOLUTE value is not specified, dx and dy specify relative motions from when the last mouse event was generated (the last reported position). Positive values mean the mouse moved right (or down); negative values mean the mouse moved left (or up).

Relative mouse motion is subject to the settings for mouse speed and acceleration level. An end user sets these values using the Mouse control panel application. An application obtains and sets these values with theSystemParametersInfo function.

The system applies two tests to the specified relative mouse motion when applying acceleration. If the specified distance along either the x or y axis is greater than the first mouse threshold value, and the mouse acceleration level is not zero, the operating system doubles the distance. If the specified distance along either the x or y axis is greater than the second mouse threshold value, and the mouse acceleration level is equal to two, the operating system doubles the distance that resulted from applying the first threshold test. It is thus possible for the operating system to multiply relatively-specified mouse motion along the x or y axis by up to four times.
Once acceleration has been applied, the system scales the resultant value by the desired mouse speed. Mouse speed can range from 1 (slowest) to 20 (fastest) and represents how much the pointer moves based on the distance the mouse moves. The default value is 10, which results in no additional modification to the mouse motion.
The mouse_event function is used to synthesize mouse events by applications that need to do so. It is also used by applications that need to obtain more information from the mouse than its position and button state. For example, if a tablet manufacturer wants to pass pen-based information to its own applications, it can write a dynamic-link library (DLL) that communicates directly to the tablet hardware, obtains the extra information, and saves it in a queue. The DLL then calls mouse_event with the standard button and x/y position data, along with, in the dwExtraInfo parameter, some pointer or index to the queued extra information. When the application needs the extra information, it calls the DLL with the pointer or index stored in dwExtraInfo, and the DLL returns the extra information.
Windows CE: Windows CE does not support the MOUSEEVENTF_WHEEL constant in the dwFlags parameter.
还想请问SENDMESSAGE函数如何正确使用
如我取得了窗口id:Hwnd,菜单id:MenuHwnd,子菜单id:SubMenuid,这样调用为何没有执行菜单功能:
dim rc
RC = SendMessage(Hwnd, &H111, Submenuid, 0&)
请您指教!
Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
「已注销」 2000-08-06
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可以使用API对某个窗口发消息啊,SendMessage。

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