If I know the hwnd of a window, could I get it's position and location based on my screen size. (I mean, size and location in pixels)
What I want to do is capture the screen, but only capture the handle's area.
I have the following code inside my MDI parent form:For Each crl As Control In me.Controls
crl.?????
Next
The code mainly used for getting some info from all child forms.I can get all the general property like size, location by crl.size or crl.location. But if all the forms have an own variable like myTxt. How could I get this own variable by this For Each method?
I have 2 group box components and both are same size,font,location and visible is false. When i click button2, the groupbox1 won't appear(the group box2 is on bottom n group box1 is on top).
Example:
button1
groupbox1.visible=false
groupbox2.visible=true
button2
groupbox1.visible=true
groupbox2.visible=false
Because i want to show the different,so the location have a little different(actually both are same location). I think my code is no problem. The problem i guess is both component cannot locate at same location?
I have the Context Menu Options like ( Small Font , Large Font ) based on the selection I want to change the size of the Font in the Controls,Control's Size & location(x,y,height,width). The resize of the controls should not affect the look and feel of the forms.
View 5 RepliesIf I want to chand the background color of all the child windows opened i would use this:
For Each chld As Form In Me.MdiChildren
chld.BackColor = Color.LightGray
Next chld
But how can I modify the color of a textbox found on the child forms?
I have a Vb.Net MDI which has it's Menu's on it. I have Child Window and it has it's own menu. I opens the child window inside the MDI using setparent API function. When I click on Child window's menu to open the sub menu items, it does
not open on mouse click . It works if I use Alt+Hot Key. But I want to open the Child window menus on Mouse click like it opens the MDI menus.
Was just wondering if there is a way to set the location and size of a form in the same line ... as i have a form that takes a little while to resize all components ... and when u tween the form's location and size at the same time it chunks as it sizes.
View 1 RepliesI wam trying to create a application that will take a screenshot when the timer ticks over.What I need to find out is how do i Make a type of 'crosshair' system for the window that the screenshot will be taken.ike I will have my main VB app and the end-user will drag the crosshair over lets say, Their iTunes libary and the ap will get the height, width of the iTunes and then take a screenshot JUST OF THE ITUNES program, not the whole dekstop.
View 23 RepliesI have come across a problem with visual studio 2010 & vb.net. i have a few custom controls on the form and few standard controls. When i build the application, the custom controls automatically change size and location. Anchoring and Dock properties are fine. Anchored to Top Left without dockstyle. Even if i fix the location and size in design mode, after i run the application the controls again change back to weird position.
View 2 RepliesI make 3 datagridview control in 3 tabpages with same size and location, they stack together.I can tick the related datagridview to show such each datagiridview.But when initialize or tab selectedIndex change event, change from dgv to another dgv. dgv display in mess, all border line and color are not shown property.When I resize my main form cause dgv resize, it display fine.
1)Is it bugs for dgv ?
2)I try to run the Main_resize before but also not ok , need to manually regulate the main form size. [code]
I have been searching for a solution to this but I can't find one. I have played with the anchor and dock properties but they are not doing what I want, so here goes... I would like to place and size all of my controls on my form and then when the form is re-sized during run time (different resolutions, full screen/windowed, etc), have everything just scale up or down accordingly. Anchoring the controls to all four sides of my form re-sizes the control properly but it doesn't move it's location in sync with the other control's size next to it, they begin to overlap each other. Am I going to have to code my own scaling code for each control in my program?
View 5 Repliesim toying with an idea based round having controls end user movable at runtime, and having a function to save the current position/location of all the controls, so then i can skip through presets i already made as it were. Ill be using .ini files eventually (just testing with txt files to check it was a valid aproach) I can get all the info i need into the txt file, the problem is how to read it back into the app?
[Code]...
I am working in VB.Net.Can some one provide me the documentation of Lib "User32". I want to know that Lib User32 is used for what purposes Or which functions it can perform?
View 2 Repliesim using vb.net to open IE and go to a website... i can figure out how to size the window, but not change the windows location on the screen... how can i make the IE window position always 0,0
Dim oIE As Object
Dim hWnd As Long
oIE = CreateObject("InternetExplorer.Application")[code].....
[code].....
View 9 RepliesIm working on the Hyvar.NET project, and I've just started sandboxing browser tabs. Im using the sendmessage function of win32 to manipulate each tab, but i need to send things like Webbrowser.Navigate(URL) in the sendmessage function.
So far i have this:
<DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
Public Shared Function SetParent(ByVal hWndChild As IntPtr, ByVal hWndNewParent As IntPtr) As IntPtr
End Function
[CODE]................
I somehow need to send the navigation methods etc using sendmessage....
I want to take a snapshot of the foreground window without using print screen key. So far the only think i can do with the foreground window is get its title but If i can get the size and location then I can get cordinates on where to set capture with graphics.copyfromscreen.
View 3 RepliesI have a web cam connected through USB,I capturing and saving video it with avicap32.dll and user32.dll.But in the same time I need to starting other hardware and working with it trough COM port during capturing. And here appearing a problem, because then I send a command for start video capturing:
SendMessage(hWnd, WM_CAP_SEQUENCE, 0, 0) ' start video capture
the executing code stops at this line until I click to stop to capture. But in the capturing time I need to work with my hardware, to obtain the data from it, and after that to stop capturing.To make to work simultaneous video capturing and my hardware or its impossible to do that with avicap32.dll and user32.dll.
What's the difference between these two declarations for PInvoking a user32.dll function?The first way, which I've commented out since it gets an error (Type DllImport is not defined"), the second way works. [code]
View 5 RepliesOk so i have this function at beginning:
[Code]...
When I try to execute my code, the new process in my panel will act weird and crashes. That's my code:
'API Functions
Public Const GWL_STYLE As Long = (-16)
Public Const WM_SYSCOMMAND As Integer = 274
Public Const SC_MAXIMIZE As Integer = 61488
[code]....
I am trying to write a system service that can detect whether the user is active and then launch a process if not. I am using a service because I want this to work if the user is logged in or not. I have been trying to hook into the user32.dll API and retrieve the time since last user input. However the integer being returned is always 0 so I don't think it is working correctly. Is this not possible when running as a system service?
View 1 RepliesI was wondering if there was a function in user32 that could enable a hwnd control if it is disabled (grayed out) If I know the handle then can I do this? Also, if it is a menuitem, can it be done too?
View 1 Repliesi don't know why I got the error.
Code:
EntryPointNotFoundException was unhandled by user code
Code:
Private Declare Function SetForegroundwindow Lib "User32" (ByVal hwnd As IntPtr) As IntPtr
Private Declare Function GetForegroundwindow Lib "User32.dll" () As IntPtr
Private Declare Function SetActiveWindow Lib "user32" Alias "SetActiveWindow" (ByVal hwnd As Long) As Long
[code]....
If using the following in an if statement I get an error: If trg.Name.Substring(4, 6).ToUpper <> ("ABCDEF") Then I get the error: "Index and length must refer to a location within the string. Parameter name: length"
I assume this is because the string (trg.name) is too small for the 4, 6 substring. What would be the correct method of working around this problem? VB.net Studio 2008.
Now all went well about from using the structure correctly. The working of the structure was perfect. How ever i missed Two important issues. The structure needed a fixed size of 10 items (9 in programming terms starting from 0) And also out of the 5 items allowed to be chosen as one of the member types for the structure a limit of 5 items of that particular type.
[Code]...
i am using an unbound datagridview so i can dynamiclly add rows. all that is working fine. but the grid is not is the location i have coded.. i am using the defualt form as a base then coding the unbound stuff in.. should i just create a blank class file and do everything? the only problem i am having is the grid must bees in the correct location according to the pixel point that i have given it. Right now it is placing the grid at point (0,0) no matter what point is entered on the line for location. so what am i missing??????
View 3 RepliesI got a error when I run this code:
Dim btch As String
Dim LeftPart As String
[CODE]...
It says index and location must refert to a location withing string
dim cn as oledbconnection
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:valid.mdb")
[code]......
we have a user that my program works fine for.. and another that it just crashes for.. they get this error
"You cannot start application <App_Name> from this location because it is already installed from a different location."
then they run it up again and it comes up.. and then just closes..in reading some stuff online it says its a framework 2.0 sp 1 issue ?these pc's have 3.5, but my program uses all 2.0 stuff..so is this a 2.0 sp level issue ? or should I make my programs start to use framework 3.0 instead ?