how to properly use the "SendMessage" and "PostMessage" API's. I'm trying to make a simple program that will draw a picture, in the background, in Microsoft Paint.how to "Move the Mouse" and "Hold/Click the Mouse" in the application without having to actually "Do it"
View 14 RepliesFirst of all, is it even remotely possible to have PostMessage or SendMessage "press keys" inside of a Fullscreen game? I.e. use the Chat? (Requires the user to activate the chat box, type in the message, then send it, which is all done with the keyboard)
I've tried many different ways using WM_KEYDOWN and WM_CHAR, and nothing worked.
[Code]...
I am trying to get it to activate the user's chat by pressing enter, type in the text, then press enter again. Except, I would like for the game to be minimized and allow this to work. Or, if while the game was running in fullscreen, that I was able to use SendMessage or PostMessage to type text into a Command Prompt Window.
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 RepliesCan 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 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.
We have a form that is saved to the system tray and can be viewed in one of two ways.One view is like a rectangle and the other view is more of a square. In either case, there is a MaximumSize set on the form. We would like to use WindowState to toggle between the two by allowing the user to click the Maximize / Restore icons in the title bar.The problem is that when the user clicks the Maximize icon, the form jumps to the upper left corner of the screen. This is logical, since a maximized form should be anchored to the upper left. But in our case, the MaximumSize property prevents it from fully maximizing. The actual size is around 800 by 400. If they then click the Restore icon for the second view, it jumps back down to the original location.
View 16 Repliesgive me a link to an Example on SendMessage/PostMessage? (I want to use SendMessage/PostMessage to send Strings)
View 6 RepliesDue to use postmessage tow times, I want add a delay (50) between tow postmessage(), and my timer interval is 1000.
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
If CheckBox10.CheckState = CheckState.Checked Then
st = Int(Val(TextBox17.Text) * 10)
[code]....
and I konw Thread.Sleep(50) is not good, but how to use timer stop here.
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?
In VB6, you can use the SendMessage API to quickly find a list item: [URL] I can't find how to do that in VBNet (with the API)
View 2 RepliesI am using the following code to click a button for displaying another form to click on:
Dim hwnd As Integer = FindWindow(vbNullString, "Virtual CDRom Control Panel")
Dim x As Integer = FindWindowEx(hwnd, 0, vbNullString, "Driver Control ...")
SendMessage(x, BM_CLICK, 0&, 0&)
Thread.Sleep(200)
hwnd = FindWindow(vbNullString, "Virtual CD-ROM Driver Control")
Debug.Print(hwnd)
[Code]...
I am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
So I created a store procedure on my Sql Server 2008.
View 10 RepliesI'm making my own winforms button, mainly to be able to control more aspects of a regular button. So far, I've figured out how to control the looks of the button properly, but now I need to implement the changes I've made. I can draw what I have so far, but it flickers even with double buffering...
Inherits System.Windows.Forms.Button
Protected Overrides Sub OnPaint(ByVal pevent As System.Windows.Forms.PaintEventArgs)
MyBase.OnPaint(pevent)
[code]....
So far I just want to get my gloss working.I'd also like to know how to control some of the more tedious properties of a button, such as corner radius and how I can make the flatstyle of the button "Flat" all the time without the option to change it (this is so that I don't have to worry about borders and stuff).
I have a progressbar which receives the amount of Sub directorys within a main directory as a Maximum value and when i run the program It goes through the directorys to grab all the files within the subdirectory.
This is the code below which is updating the progressbar.Foldercount is an incrementer which increments by one for each folder it enters.
Dim percentage As Double = folderCount * 100 cirFolderCount.Maximum
cirFolderCount.Text = percentage.ToString
cirFolderCount.Value = Convert.ToInt32(percentage)
On the test directory which has 4 sub directorys I get a maxvalue of 4 and the min value is set to 0 The code above returns the value of 25.0 when entering the first folder which is correct (25% of 4 is 1),But the progressbar does not fill 25% of bar once this folder is processed.
How exactly would I use PostMessage and PeekMessage? I'm trying to make a Client/Server type of program. The server program will send a message to the Client and the client will do a set of commands when it gets that message.
View 2 RepliesHow do I use postmessage in 2008?
View 1 RepliesI have my own control which inherit System.Windows.Forms.Control The only functionality that this control requires is the capability of losing and gaining focus. I learned this requires the control style of selectable to be applied which is descriptive as exactly what I'm in need of, "If true, the control can receive focus.".
However after applying this style in my code, the control still refuses to have anything to do with gaining or losing focus. Other styles I have applied to this particular control are as fallowed
UserPaint, AllPaintingInWmPaint, and SupportsTransparentBackColor. I'm not sure but perhaps one of these other styles interferes with the one that's not working properly.
how can i do this i want it to send it to my From1 and to the x,y i want
View 13 RepliesHow would I use PostMessage to send Keys? I dont want to use SendKeys.Send
View 7 RepliesI'm having issues trying to get file system watchers working properly, I'm not sure whats not right here, I want to use multiple, but I can't even get one of them to fire on an event... simple form with a listbox for folders to watch and a listbox to list changes detected and a command button to launch watchers.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
lstFolders.Items.Add("C: emp1")
lstFolders.Items.Add("C: emp2")
[code]....
I have an Vb.net application made by a third party , that I need to control using outside resources from a simulated environment and must not interact with the desktop. To simulate inputs that a user would normally input from a special screen with specific keys around it, I've built a test control library to control it and send the form image to a .bmp. The form cannot be visible and showed in taskbar , the bmp output will be displayed by the simulated environment.Using PostMessage and sendKeys work well as long as I don't but ShowInTaskbar = False for the main form. After many read & testing, I have learned enough to try what seems to be the only thing that would work. I've created a form that I setparent using HWND_MESSAGE parameter, this should create a Message-Only Windows, that are supposed to received postMessage, and subclass it's events.msdn.
I can't seem to get it to work, and I was hoping someone could tell me what I'm doing wrong.I have been testing several different ways found through out the web about .net , and short of going into message thread peek and feed(maybe(may be)my last hope), they all seem to work until I take the forms out of the taskbar.[code]
Although there are already a few resources online that address this rough topic, I still haven't found an answer that works for me.I desire to have full communication between my VB.net process and my C++ process. I would like to be able to send a string to and from the C++ process, but for the time being I need to achieve:
Sending a string to the C++ process, and handling it.This creates a few points that I am uncertain on, but I'll try to keep this as simple as possible...using the following function declaration in VB;[code]....
And finally, I used the IPC example here to send the message. This example sends the message using C#, but the concept was all I needed (not to mention that it's a walk in the park to convert such code to VB). Note that in my VB implementation, I didn't need to terminate the string with a null character.
I'm trying to make a program of mine into a multithreaded application, but I've hit a pair of snags that I documented in the following code. I can expand this stub into a more efficient version of my existing application.
[Code]...
Does anybody know the code to refresh and reload desktop icons, you know how after installations of programs it sometimes refreshes the desktop? That is exactly what I need and what I am looking for. Someone please help me out here because I tried searching on google and could not find any proper code.
View 5 RepliesI borrowed part of this routine to download files, and it works great; except when I download text files the returns aren't written into the outputted file. I've tried different web request and techniques with no luck in solving the problem.
Test file:[URL]
Private Sub DownloadFile(ByRef FileSource As String, ByRef FileDestination As string)
Dim request As WebRequest
Dim response As WebResponse
[Code].....
I'm trying to send a key stroke to one application, through PostMessage. I am using too Spy++ to try to understand how to send the message, as I do not fully understand its inner workings. In this picture, the first item(selected item) was made with an actual key stroke made by myself. The one with a red elipse around it(below) was made with the following code:
[Code]...
I guess it must have something to do with the last PostMessage() parameter, but I can't figure out how it really works. I can see in the original key stroke the ScanCode = 48, and in mine its 0, and also fExtended is 1 and in mine is 0. How can I make it look the same? edit: Here is the msdn link. [URL].aspx I cannot understand the last parameter's working, if anyone does..
End A statement which as far as i know doesn't close you program properly and hides errors. Right now i'm being forced to use end because i don't know how else to close my program properly. I'm not sure where my problem is but some of you should be able to fix it. I'm trying to make a game using directx with a game loop. This code is the skeleton of what i'm making.
Public Class Form1
Private ProgRunning As Boolean = True
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Show() 'Make the form appear
Me.Focus() 'Give the form focus
[CODE]...
This code runs alright because end is being used but if you rem end out the error which it's hiding comes out. The error is "Object reference not set to an instance of an object." I'm not totally sure but i'm guessing that the error is refering to the form.
I'm working on it for a couple of days but I couldn't get any success.. I'm trying to access Calc's edit box and trying to write something there but I couldn't do it =( what's wrong with my codes?
[Code]...
My application watches two buttons:
1. F11 => my application minimizes and hides another window (windowHandle is its handle), then sends there WM_RBUTTONDOWN (right mouse button click&hold).
2. F12 => my application unhides and restores that window, then sends WM_RBUTTONUP (right mouse button release).
The problem is when I press F11, and then click somewhere (so windowHandle loses focus), the right mouse button releases automatically, but I want it could be released only after I press F12. Here is part of my
Public Sub Tick()
Dim windowHandle As IntPtr = FindWindow(vbNullString, "App")
If GetAsyncKeyState(Keys.F11) Then
[CODE]...
So, is there any way how to not release right mouse button?