Directing mouse events [DllImport(“user32.dll”)] click, double click

问题

I tried [DllImport("user32.dll")] static extern bool SetCursorPos(int X, int Y);

and it works pretty fine to move the cursor to the desired point. I have never tried such kind of a DLL import before but it works :). However I want more what else can I extract? Mainly I want to make double click, click or use wheel options without any mouse input, just the code how can I do that? and how can I check what else is included in user32dll?

Thanx

回答1:

[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint cButtons, UIntPtr dwExtraInfo);
private const uint MOUSEEVENTF_LEFTDOWN = 0x02;
private const uint MOUSEEVENTF_LEFTUP = 0x04;
private const uint MOUSEEVENTF_RIGHTDOWN = 0x08;
private const uint MOUSEEVENTF_RIGHTUP = 0x10;

You should Import and Define these Constant's to work with Mouse using Win32API

Use method's below to do Mouse Operation's

void sendMouseRightclick(Point p)
{
    mouse_event(MOUSEEVENTF_RIGHTDOWN | MOUSEEVENTF_RIGHTUP, p.X, p.Y, 0, 0);
}

void sendMouseDoubleClick(Point p)
{
    mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, p.X, p.Y, 0, 0);

Thread.Sleep(150);

    mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, p.X, p.Y, 0, 0);
}

void sendMouseRightDoubleClick(Point p)
{
    mouse_event(MOUSEEVENTF_RIGHTDOWN | MOUSEEVENTF_RIGHTUP, p.X, p.Y, 0, 0);

    Thread.Sleep(150);

    mouse_event(MOUSEEVENTF_RIGHTDOWN | MOUSEEVENTF_RIGHTUP, p.X, p.Y, 0, 0);
}

void sendMouseDown()
{
    mouse_event(MOUSEEVENTF_LEFTDOWN, 50, 50, 0, 0);
}

void sendMouseUp()
{
    mouse_event(MOUSEEVENTF_LEFTUP, 50, 50, 0, 0);
}

If you want to do a Mouse Drag you should First Send MouseDown(Mouse Click) and keep it Clicked While Changing the Mouse Position than Send MouseUp(Release Click) something like this .

sendMouseDown();
Cursor.Position = new Point(30,30);
sendMouseUp();

回答2:

Using long type raises an "PInvoke" error.

We should use int type:

[DllImport("user32.dll")]
static extern void mouse_event(int dwFlags, int dx, int dy, 
                      int dwData, int dwExtraInfo);

[Flags]
public enum MouseEventFlags
{
    LEFTDOWN = 0x00000002,
    LEFTUP = 0x00000004,
    MIDDLEDOWN = 0x00000020,
    MIDDLEUP = 0x00000040,
    MOVE = 0x00000001,
    ABSOLUTE = 0x00008000,
    RIGHTDOWN = 0x00000008,
    RIGHTUP = 0x00000010
}

public static void LeftClick(int x, int y)
{
    Cursor.Position = new System.Drawing.Point(x, y);
    mouse_event((int)(MouseEventFlags.LEFTDOWN), 0, 0, 0, 0);
    mouse_event((int)(MouseEventFlags.LEFTUP), 0, 0, 0, 0);
}

source: http://www.pinvoke.net/default.aspx/user32.mouse_event

回答3:

Take a look at pinvoke.net for a listing of the available APIs. Code examples and the import statements are included. You can also expand the selection on the left to see the available APIs for each DLL.

来源：https://stackoverflow.com/questions/8739523/directing-mouse-events-dllimportuser32-dll-click-double-click

标签

user32