the following code is supposed to replace the system color that's used for window backgrounds. You'd change it by P/Invoking the SetSysColor() API function. i am using the following code that was suggested to me but unfortunately when i click the button nothing happens!
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Runtime.InteropServices
[code]....
How to change a forms background system color schemes to windows default color schemes in vb.net?
View 2 RepliesI was working on changing the default mouse hover style color to implement the light blue gradient instead of the default orange color.I observed that one can change the highlight color only for buttons which have
View 1 RepliesIn either of these (preferably Vb6), is it possible to replace a specific pixel color with a defined color? For example, if i scan my screen for 100,200,150, is there a way i can replace every instance of that with a specific color?
View 4 RepliesWith the following imported namespaces in my project :
Imports System.Windows.Forms
Imports System.Reflection
.. I cannot add..
[code].....
I am trying to do this(will explain below) :
If RichTextBox1.Text = "" Then
MsgBox("No text selected!", , "Warning!")
Else
[CODE]...
I created a button , i have a richtextbox , i want to do this : i will right something in the richtextbox , and when i will select what i wrote and click on the button it will replace it with <font color="">something</font>. but instead it rights next of what i selected .. any clues how to replace it and not right next to it ?
I'm in search of a simple algorithm to replace a color in an image with a different one like in this one-> [url]. I'm using VB.NET. Can a "flood fill" algorithm be applied for this purpose?
View 1 RepliesIm havin a problem changing my picturebox back color to System color "Control".I can set it to color.red , color.blue etc , but not control .
View 6 Repliesi need to get data from checkbox in a groupbox. in the groupbox, it also have a label. so my coding as below
[Code]...
I have the code which checks if there is a selected tab
Private Function GetBrowser() As WebBrowser
If TabControl1.SelectedTab IsNot Nothing Then
For Each c As Control In TabControl1.SelectedTab.Controls
If TypeOf (c) Is WebBrowser Then
Return c
[Code]...
I have some code that uses the Replace function to modify the content of a string like:
x = Replace("Hello World", "H", "P")
This works fine until I decide I need to use so of the abilities found in "System.IO.File" When I place at the top of my code.
Imports System.IO.File
The " x = Replace("Hello World", "H", "P") " code pops up with the Error: "Expression does not produce a value."Looks as if the System.IO.File I now want to do some file manipulation..
I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..
View 4 RepliesFrom my understanding PictureBox's don't support transparent backgrounds. What I am trying to do is just have a single picture that needs a transparent background just to be on display with my form. So how do I do this?
View 5 RepliesI am using a picture box to load an animated gif as a background on top of my form (same size as the form). On top of that I have a standard label with some text. I have made the label background transparent but it doesn't display correctly with the animated picturebox behind it. The label background is transparent but it doesn't draw the animation correctly under it. It almost looks like it is drawing it at a few frames behind. Now, I know I can draw the text on the animated picturebox by hand (I have done that before) but I am not sure it is possible this time because the labels are part of custom controls.
View 4 RepliesSeen this question asked a lot but can't seem to find an answer. So here it is. Can you use a PNG with an alpha channel as the background image for a VB app? I don't care about changing the shape of the app rectangle is fine. They just want to use a character with a drop shadow behind him as the background for the app.
View 1 RepliesI'm using GIF images, but whenever I put them on my forms in Visual Basic they still have the white background. How do I get rid of the white backgrounds?
View 24 RepliesWhat is the code to replace text in a document. For exaple if my document had the text "The Dog Jumped over the fence" how would i get it to change to "The Cat Jumped over the fence"
View 3 RepliesI need to have a custom background on a panel that can be resized with the form and want to know how I should go about designing it. Maybe have three images the left side, right side and the middle is just replicated? The thing is I would like for it to have a border and there will be buttons attached to the top edge so simply stretching a static picture may make the buttons not line up properly.
View 1 RepliesI am trying to get diffrent backround colors on the items added to the listbox (And no, i cant use ListView becouse it misses some important stuff..)
View 1 RepliesI am trying to get diffrent backround colors on the items added to the listbox (And no, i cant use ListView becouse it misses some important stuff..)I have found some code, but it only changes the text..
View 2 RepliesI have a utility that is a simple exe that is not installed compiled with VS2005 and works well. But when I upgraded to VS2008 the utility can no longer locate files in the active system folder. I have UAC turned off and am logged in as the Administrator and it still can not locate a file that I can see in Windows Explorer. The file I am looking for is PakMgr.exe.
View 1 RepliesPrivate Sub wb_Scrape(ByVal sender As System.Object, ByVal e As
[Code]...
Win7 64 bit; fully patched VS2008 targeting FW2.0; VB.Net; running in Debug Mode (not tested in Release mode)I have a resonably complex app which I am refactoring a bit. As part of that, I relocated some code from a subroutine into a Click Event Handler. The Event Handler will, late in the handler, call the, reduced in function, subroutine. The point of this is thatNow when I click the button associated with the modified Handler I get:A first chance exception of type 'System.AccessViolationException' occurred in System.Windows.Forms.dll<br />With Error System.AccessViolationException Attempted to read or write protected memory.This is often an indication that other memory is corrupt.
at MusicManager2009.frmMain2.cmdLoadAlbum_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
[code].....
All functions of the app, except those that start from the buttonclick in question, work as before in the problem version.The problem persists after rebuilding the entire solution, after restarting VS, and after rebooting the PC.
When I run my project I get "An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll"
Public Class frmViewReport
Dim objForm As New frmViewReport
Private Sub frmViewReport_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
objForm.ViewReport("C:a2.rtp", , "@parameter1=test�mter2=10")
[code]....
I have the following code running, the first time I change the selected index, everything runs smoothly. However, if I try to change the selected index again, nothing happens and the subcategories combobox values do not change.
Private Sub cboMainCategory_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboMainCategory.SelectedIndexChanged
'* make sure the combobox is fully loaded
[code]....
I keep getting an eroor this error says: An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in system.windows.forms.dll Additional information: Specified argument was out of the range of valid values.
Option Strict On
Public Class frmWeeklyReport
Inherits System.Windows.Forms.Form
[code].....
A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll It displays in my Immediate Window when i run my program, I'm using a text reader to read a number of XML files using background worker...most the time it stops so something is wrong but sometimes it works fine.
View 2 RepliesI have big problem with my CHAT app. I want to add smiles but i have some problems. I using transparent Richtextbox, and when i try to use Regex system to replace text with image it work, but everytime other smiles disappearing, i only see last one. Second thing, i want to use GIF animated smiley and this Regex method don't work with all of these my problems. So i need an other way... Can anybody show how to do this
Imports System.Runtime.InteropServices
Public Class TransparentRichTextBox
Inherits RichTextBox
[code].....
I am working on a card game, and i get this werid error:
A first chance exception of type 'System.Reflection.TargetParameterCountException' occurred in System.Windows.Forms.dll
The code that is cousing this error is:
Private Delegate Sub ShowcardDelegate(ByVal test As String, ByVal objtest As Object, ByVal value As Boolean)
Private Sub Showcard(ByVal test As String, ByVal objtest As Object, ByVal value As Boolean)
If objtest.InvokeRequired Then
[code].....
I want to cast a system.string to system.windows.forms.form
View 2 Replies