I am using SendMessageTimeout to send messages (IPC) to talk between applications ... works fine in vb... but i am trying to build a vb.net implementation to talk between existing vb6 apps and .net ones...
So far i can successfully send data from vb.net to vb6 using:
vb
Dim b = System.Text.UnicodeEncoding.ASCII.GetBytes(Command)
Dim Data As New COPYDATASTRUCT
Data.dwData = New IntPtr
Data.cdData = UBound(b) + 1
[Code]...
Can anyone give me a SendMessage/PostMessage Example? I want to make SendMessage/PostMessage work like SendKeys, except instead of sending keys to the app in focus, it will send keys to a certain app. I've looked at a lot of examples that use notepad, but they all need to use "find" the "EDIT" thing. I dont want that. Is there any other way?
View 3 RepliesCan someone give me an example of how to use SendMessage to send text?
I found some code on Google but I cant get it to work
Private Declare Function apiSendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Int32, ByVal wMsg As Int32, ByVal wParam As Int32, ByVal lParam As String) As Boolean
Declare Auto Function SendMessage Lib "user32.dll" (ByVal hWnd As IntPtr, ByVal msg As Integer, ByVal
[CODE]...
I have wrote a program that uses sendmessage to automate clicks. I have also made it where it can minimize to tray, hides form & shows an icon in tray. The problem is that when it's minimized it takes focus from whatever else I'm doing, like if I'm typing in Notepad when the program sends the message it takes the focus from notepad.
View 2 Repliesgive me a link to an Example on SendMessage/PostMessage? (I want to use SendMessage/PostMessage to send Strings)
View 6 RepliesLet's say I have 2 applications, app1 and app2. If app1 were to use SendMessage to set the text of a control in app2, is it possible for app2 to get the HWND of app1?
View 5 RepliesCODE:
Whats wrong with this code? There is no error. But nothing happens when exicuted.
[code].....
View 8 RepliesI'm trying to send some words to an application I'm running (exe file, no webpage). To do this I run my vb program and minimize it, so that the application I want to send the words to have focus.Now I've tried sendkeys, but it seems sendkeys only sends my first word and does nothing with the other words. The code below is called 4 times by the main form
If i > 3 Then i = 0
i = i + 1
If i = 1 Then verhaal ="some text 1"[code]....
but this throws in a overflowexception was unhandled error at the apiSendMessage(hWnd, WM_SETTEXT, 0, "Hello") line.I've tried several things but I can't figure it out how to send multiple words to the application without problems .
I would like to get the x, y position from the Params when the WM_LBUTTONDOWN is sent in vb.net.I got this to make the param but how do I get the position from it.
IntPtr lParam = (IntPtr)((y << 16) | x);
My function:
Protected Overrides Sub WndProc(ByRef m As Message)
Select Case m.Msg
Case WM_LBUTTONDOWN
[code]....
Update: I just tried this and it works perfectly.
Dim pos As New System.Drawing.Point(CInt(m.LParam))
Private Const WM_KEYDOWN = &H100
Private Const WM_KEYUP = &H101
Private Const VK_BACKSPACE = &H8
[code].....
I have this code:
Private Const MOUSEEVENTF_LEFTDOWN = &H2
Private Const MOUSEEVENTF_LEFTUP = &H4
Dim WindowHandle As Long = FindWindow(vbNullString, "Ultima Online")
SendMessage(WindowHandle, MOUSEEVENTF_LEFTDOWN, 0, 0)
SendMessage(WindowHandle, MOUSEEVENTF_LEFTUP, 0, 0)
I know it is getting the windowhandle fine, because I made a conditional statment that pops up a messagebox if windowhandle = 0 The problem is that it is not sending the mouse click to the window.
[URL]
Damned. Is there a managed code somewhere in vb.net where mortals can simulate key presses?
Is there an e-book or book somewhere about it?
I am trying to write a small plugin for eventghost for one of my software (audio player). EventGhost can send SendMessage or PostMessage messages to control other apps. How can I receive such messages in a VB.NET app?
View 1 RepliesIve been trying to figure out how to sendmessage VK_Space. i found an example and just tried it how it was, but i always get an error.My code
Public Class Form1
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As IntPtr, ByVal wMsg As IntPtr, ByVal wParam As Long, ByVal lParam As IntPtr) As IntPtr
[code].....
bear in mind i am pretty new to thisnow "Ultima Online" is the title of the window/game im trying to send a simple mouseclick to..
View 2 RepliesI use keybd_event and mouse_event to simulate keypresses. I want taht to still work when the user is switch (Xp supports several users as we know).
Well, it doesn't.
I've heard sendmessage is more reliable,.
I manage to simulate click easily.
SimulateClick2 = SendMessage(hwnd, BM_CLICK, 0, 0)
Now, how to do so to simulate keypresses?
I can't seem to get my program to send anything to this text box. I am able to receive the handles of each object, but never able to send to it.
Here is my code.
vb.net
Public Const WM_SETTEXT = &HC
Public Const WM_KEYDOWN = &H100
[code]....
It wont even set focus.I have the right amount of tiers ... perhaps im in need of the use of GetControl?
I am Automating IBM iSeries Emulators using VB.net, created GUI that embeds the external iSeries Emulator Window in a WindowsForm Panel using the "SetParent" API .. To communicate with the iSeries Window I use the SendMessage API to send Key's to the Screen. I am aware of the sendkeys.keys in .net, but this way I dont have to SetForegroundWindow and reactivate my Form.
[Code]...
I developed a little app which uses SendMessage function to turn off monitor. My friend asked me whether using the app regularly will harm his monitor. He had some issues with his mother board when he used a similar app. Is there any harm (for hardware) in using the function to do things like these?
View 1 RepliesI am launching an external that brings up a window that is split into two frames. I am able to get the handle of the frame and what I want to do is click inside the frame in a certain area.
For example, if I open "System Information" by launching msinfo32.exe, how would I click on Internet Settings in the left window pane? I don't need the exact coordinates, just an explanation of how it can be done using SendMessage or PostMessage.
I've tried things like:
PostMessage(sideWnd, WM_LBUTTONDOWN, 200, 1200)
PostMessage(sideWnd, WM_LBUTTONUP, 200, 1200)
I wasn't sure if the end two numbers would be coordinates, but if they are, I've tried different numbers and can't seem to get it to click anything other than the first item in the list of the left window frame.
I need an API for sendmessage and sendmessagetimeout for my VB .net application. I have searched quite a bit, and everything I find doesn't seem to work: either the message just doesnt seem to be sent, or the message appears to be sent with the msg parameter always 0, and the wparam setting as what I enter for the msg setting. Pinvoke's also always seems to throw an AccessViolationException for I have no idea what reason. I tried playing around with maybe just where I put the variable, but unsurprisingly, there is not a simple logical switch of the variables.I have tried pinvoke's:
<DllImport("user32.dll", SetLastError:=True)> _
Public Shared Function SendMessageTimeout(ByVal windowHandle As IntPtr, ByVal Msg As Integer, ByVal wParam As IntPtr, ByVal lParam As IntPtr, ByVal flags As
[code].....
I am currently writing a program that must extract data from the screen of another application. This application is a client side database interface. When the client retrieves data from the database it is displayed on this form. I am currently using.
[Code]...
i have read around 500 websites/forum posts about this already (felt like 500 :)) but i _never_ got it to work.i'm trying to click on a specific position in a background window.. like when notepad, another app or a game is minimized.this is the code i've got now.. (just parts of it, i have a lot more but its commented and not working either):
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long
Dim DaWord As Long
DaWord = MakeDWord(800, 600)
[code]....
Example I would want my program. To press a button on a window. Like notepad.exe I already know how to get the window handel and call gettext or send. To the edit textbox. But how would a preform a click event? I think its called child class? Say I wanted to click the fille button. How would I start ? I know how to get the name threw spy++ but am not sure how to sendmessage to the button.
View 2 RepliesI am trying to get the position and text of all DeskTop icons, by sending a SendMessage to the desktop's listview, using LVI_GETITEMTEXT. Works oke on 32 bits, but on 64-bits I always get an empty string back. I also tried to do this using LVI_GET_ITEM< but the same result. No errors, but also no text string. (I do get the x,y position of the icon). What is wrong here?
[Code]...
another problem related to what I posted earlier but a different problem. I've got the open window list and all that, now I'm trying to get icons from the windows... but the only window that I can get to return an Icon is internet explorer?
[Code]...
I know all the variables are set correctly since obviously it can get Internet Explorer's icon, but I can't figure out a way to get icons from any of the other windows. I've tried ICON_SMALL BIG and SMALL2
how to type a hello word in notepad using sendmessage? i just want to write a simple word like "hello" in notepad and also, what is the difference between sendmessage , postmessage and keybd_event, etc?
View 5 RepliesI have read numerous postings but this is my first contribution. I am trying to use Sendmessage to send a string of text from one application to another. I have created a sandbox to work out the details. I have used the Notepad example and I have gotten that to function. This is what I have that works.
[Code]...
I have this window with hwnd = 132240. I am trying to use WIN32 API's SendMessage function to send a WM_SETEXT message to the window.Code that I have written
Const wm_settext As Long = &HC
'sendmessage(66824
Dim rc As Long
[code]....
