VS 2008 Manipulating WndProc Messages Causes Weird Behavior When Changing Me.ShowInTaskbar
Oct 8, 2009
I am capturing a few system command messages (namely minimize/maximize/restore). Inside the WndProc override I am trying to change the form's Me.ShowInTaskbar value but it is causing weird behavior in that minimization and restoration does not occur properly.Can anyone think of a reason why changing this property would interfere with this? The reason I don't really want to post code is because duplicating the effect takes a bit of code/setup. My initial thought was that changing the property's value is somehow sending another windows message and canceling the one I am currently manipulating. I realize this is a little vague but it's a shot in the dark.
I am adding characters to a RichTextBox one character at a time and setting the format of that character after it is added. The following code is a distillation of the actual code but reliably repeats the problem I am having.[code..]
While that is odd to me and unexpected, where it happens in the code is even stranger. By stepping through the code, prematurely going to the End Sub and then displaying the form, I was able to determine that when i = 3 and the line "Me.RichTextBox1.Text = Me.RichTextBox1.Text & "S" is exceuted, the color of the first two "S" are changed from Blue and Red to all BLUE.
I do not understand.a way to add characters to a RichtextBox and set the formatting of those characters?
This example is just color. I the real project I am setting Size, Color, Bold and Italics. I do not know if the solution to this color problem will affect the other formatting information.[code...]
I'm inheriting ComboBox and want to implement some special processing for Copy/Cut, I have the code below to handle it, but unfortunately the Copy/Cut message code is not sent to WndProc. The same code is working properly in inherited TextBox.[code]....
I'm developing a program where I've had to add a keyboard shortcuts system. The problem is it uses a third party OCX for a part of its display, and it is catching some essential WM_KEYDOWN messages when in focus, like Ctrl+C, Ctrl+V, etc. I've tried catching the WM_KEYDOWN message through WndProc, but the message is not propagating, so I guess the keyboard messages go from the inner container to the outer one, don't they?
The WM_KEYUP messages can be caught tho, but I'd prefer to be able to catch some of those messages on the KeyDown event. I'm aware I could make some low-level hook, but I'd like to avoid this workaround. Well, if the WM_KEYDOWN message goes from the OCX to its top level container, I guess I'll have to treat those key combinations in the KeyUp event.
I've tried to implement directory listing using the Webbrowser component, I dont need much, just to display some directories, be hable to click them and then be hable to see its contents and be hable to see the images and files inside. the problem is, the default behavior of the webbrowser component is, any directory link you try to click. it will inmediately make either IEXPLORER or MS Explorer to run (in a new window) and open the directory. I just want the webbrowser component to let navigate freely on directories. What can I do to implement this? Just to Clarify: I just want webbrowser to open the directories and files IN THE SAME WINDOW and to not run the MSexplorer like it does by default.
I have code that adds 0.25 to textboxes each time + is pressed, and subtracts it when - is pressed. This is the
[Code]...
I don't know of any better way to have it handle each textbox, hence the long string.Anyway, these boxes are populated from a database and this code seems to work fine if there is already a number in the box. If the box is empty and I try incrementing it, I only get the actual "+" or "-" in the box and it locks my whole form out. Clicking other textboxes doesn't activate them, and my buttons press but do nothing. I can't even exit the program with the "X" in the upper right. As far as I can tell that's how to replicate it anyway.
I had a lengthy subroutine with handler routines, like this, before:
Private Sub CompMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _ ToolStripMenuItem3.Click, ToolStripMenuItem4.Click, ToolStripMenuItem5.Click,
To recreate this behaviour, you need to create a pop-up form with the following properties:
(1) ShowInTaskBar = False
(2) Display the form with the Show method and loop until the form is not Visible.
(3) In order to close the form when the mouse is clicked out of it, override OnDeactivate, and set visible to False.
Next, create another form that will display the pop-up when a button is clicked:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As Syste Using pop As New PopUp pop.Visible = True
[code]....
it also puts a black border around the form. (You'll have to set FormBorderStyle = System.Windows.Forms.FormBorderStyle.None to see this.)what this style does apart from putting the black border round the form?
This one has me stumped. I'm trying to change the location of an object's X position so that it has a marquee like effect. I'm doing this with buttons and text, etc..
PictureBox1.Location = New Point(PictureBox.Location.X - 10, PictureBox.Location.Y)With the intention of it moving 10px to the left. I would then use a timer, but it scrolls automatically for me,
I am primarily a C# developer; however, I am currently working on a project for a client who preferred VB.net. I have managed to switch over fairly well, with one frustrating exception. When editing a C# file in Visual Studio pressing enter will select an item out of the IntelliSense window and keep the cursor at the end of the selected statement.
However, when editing a VB file, pressing enter selects the item out the IntelliSense popup AND moves the cursor to the next line. I realize that this is a small thing, but it drives me crazy, because it makes it really hard to switch between C# and VB projects.
I have searched for everything I can think of in Google and found nothing. Does anyone know of a way to change the IntelliSense selection behavior?
I want to use spy++ or Winspector But from what i Read they Dont work on windows 7 64bit Correct ? Im trying to read WM_COMMAND Messages from a App.And whenever i Select 'Log Messages' And find the windows etc.Nothing show's up. Is there a alternative ?
here I am again I have written a small class called 'Messages' that holds the user messages.The case is that I am not being able to import it. Here it is:
I am trying to create a button behavior such that when you click the button it fires the click event as normal & runs the code under it. But if you click & hold the button for 1 second then it jumps to a different sub & runs some other code. I got my button working that way for the most part, using a timer & the mouse down & mouse up events. The only issue I have is that after the timer fires after 1 second & I execute my alternate code, the normal button click event still fires when I release the mouse button & runs that code. How can I cancel the normal click event so that only the alternate code runs when I click,
I have a bound ToolStripComboBox. When a user types a value and hits 'Enter', assuming the entered value is an item in the ComboBox, this Sub should fire:
I develop my VS2010 project in my laptop with SQL 2008 Standard. In my laptop everything is working good, using the following connect string as global public string when the main form loads:
I'm using the WndProc To get messages about USB flashdrives connecting and removing from the users computer. It works grand. I also use WMI queries to get the info about the flashdrives. It works as it shouold. The problem is when both of these are in the same solution. I ended up creating an extra .EXE that uses the WMI queries to get the drive info and output the info to a CSV file which my Main will parse. I tries creating a seperate class of each and i also tried to make a DLL that I import to no avail.
Currently im trying to write a HotKey class, however in order to intercept the messages you need to overwrite the WndProc and check for WM_HOTKEY.
Currently, im using Inherits Form inside of the class, so that it has the option of overwriding the wndproc, but along with that I get all the forms normal events when trying to handle it.
Below is my
Public Class Form1 Private Class HotKey Inherits Form
Ok I have a project which has a MDI parent. Inside the parent I have multiple isntances of a form load(frmLine1t5). When my program loads it will load a different form(frmSelect) and if I manually load a different form(frmRetests) I can put frmSelect on top of frmRetests and bring one another to the front if it's clicked on(without using the bringtofront method)However as soon as I load a single instance of frmLine1t5 I immediately can no longer bring ANY form loaded into the MDI parent(before or after frmLine1t5 has loaded) to the front. I can only bring them to print IF I use .bringtofront method
I've overriden the WndProc of the ComboBox and I am drawing my own combo box, a code snippet is below:
Protected Overrides Sub WndProc(ByRef m As Message) MyBase.WndProc(m) Select Case m.Msg Case &HF
[Code]....
Though the old control is still being painted as my drawn combo box is just overlapping the old drawing. Is there a way to stop it drawing the default combo box?
I have a VB.net MDI app that contains a modal window (normal window shown as modal). I have a custom title bar button that disappears if the user clicks outside the modal area.Normally, clicking off a modal will cause the system to beep and then flash the title bar of the modal window.
I have a class that inherits the Textbox class. My main goal is to prevent specific keys from being entered into the textfield. Now, I have a solution however I have one issue with it.
I'm creating a base class for a button that inherits from Control as opposed to ButtonBase. I'm using reflector to look at ButtonBase to make sure I don't overlook anything important and I'm puzzled with the contents of the WndProc method. There's checks in there for things like button up, click and capture changed, which as far as I can tell are all handled within the relevent 'On' methods of the class.
I am attempting to detect addition/removal of volume media in a Visual Studio 2005 project. I can get this to work using the WndProc message WM_DEVICECHANGE on all types of volumes except SDHC (Secure Digital High Capicity) cards. Is there another Windows Message I have to listen for? If so, what is it, and what else do I have to do?
Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) Dim str As String Dim devtype As Int32
I made a Vista Aero -style form for XP, but when using it, the application won't close. The FormClosed and Disposed events fire, but not the HandleDestroyed event. I tried to get around that by handling the Disposed event and calling Me.DestroyHandle(), and it worked, but not if the user resized the form so that it caused an IndexOutOfRangeException in BlurImage().The code is attached.
I need to check the current date and month to see if they are only 1 character long (1 - 9 - January to September) and if so I need to insert a 0 before the value in a string.Now the code I have been using is Len(Now.Month) which for some reason is returning 4 even though the current Month is February (thought this would return 1).I I use Len(Now.Month.ToString) it comes through as 1, which is what I want.
I'm in a programming class, and I need to make a game. Is there an easy way I can send messages, like "w" or "down", between 2 computers so I can have a multiplayer game?
