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I've been trying to update data that is currently displayed on a parent dialog while the user is entering data on a modal child dialog, or at least when the user closes the modal child dialog.
The parent window has a preview thumbnail of a picture file, the user can open a modal child dialog that allows him to edit this picture. What I want is for the editing of the picture or, at worst, the closing of the edit modal dialog.
The editing is done by bitmap bit editing and the data is saved to a file. The parent's preview image is generated by retrieving the data on file and reconstructing the bitmap using SetBitmapBits. The preview 'window' is a Bitmap dialog object which I use SetBitmap to load the reconstructed bitmap.
void CParentDialog::OnLbnSelchangeStringlist()
{
DWORD SelectedID =0;
BYTE PreviewInfo[MAXHEIGHT][MAXWIDTH][3];
SelectedID = m_StringList.GetCurSel();
if(SelectedID!=LB_ERR )
m_StringList.GetText(SelectedID, SelString);
BOOL ValidPicture = ReadDataFromDataFile(PreviewInfo);
HBITMAP PreviewDisplay = ArrayToBitmap(PreviewInfo);
m_Preview.SetBitmap(PreviewDisplay);
}
void CParentDialog::OnEditbmp()
{
CChildDialog* EditImage = new CChildDialog;
EditImage->Create(IDD_BITMAPEDIT, this);
}
At this moment, I can show the preview from file before the edit (triggering off a select event when the user selects the image name), but when the user opens the edit modal dialog (trigger from button press), makes changes, saves the changes to file and exits the modal dialog, the preview image on the parent window is not updated (expected behaviour since I didn't call for any change).
Is there a method to trigger the update of the data on the parent dialog? Since the modal child dialog is a different class, I do not have access to the variables of the parent dialog, and I cannot create an instance of the parent dialog just to make changes, can I? Is there a triggering point when I close the child dialog that allows me to run some code on the parent dialog's side to cupdate the picture?
Thanks in advance.
Please feel free to ask any questions. I'll answer them asap.
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Override the DoModal() for child class and pass the pointer of the parent in it.
Thanks
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Ok, call me an idiot, but how do i use the pointer to parent?
I was trying this:
CParentDialog* pParent = STATIC_DOWNCAST( CParentDialog, <pointer to="" parent=""> );
pParent->m_Preview.SetBitmap(XXX);</pointer>
within the Exit routine of the child dialog but I can't get the program to recognise CParentDialog
error C2065: CParentDialog: undeclared identifier
How do I declare the Class of the parent window in the child's code? I can't seem to remember if there's a way with extern.
Thanks again.
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You could try to send a custom message to the parent dialog.
GetParent()->PostMessage(WM_UPDATEPREVIEW)
In the parent dialog you must have a handler for WM_UPDATEPREVIEW in which you could read the file and update the thumbnail.
«_Superman_»
I love work. It gives me something to do between weekends.
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Hi,
I want to display a tooltip over a propertysheet whenever user will put the mouse cusor on its left or right border.
I am using the following
code
LRESULT MySubCard::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
LRESULT result = 0;
try
{
switch (message)
{
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_LBUTTONUP:
case WM_RBUTTONUP:
case WM_MBUTTONUP:
case WM_MOUSEMOVE:
{
if (::IsWindow(mLeftToolTip.GetSafeHwnd()))
{
MSG msg;
msg.hwnd = m_hWnd;
msg.message = message;
msg.wParam = wParam;
msg.lParam = lParam;
if(Within left or rigth border)
{
mLeftToolTip.Activate(TRUE);
mLeftToolTip.RelayEvent(&msg);
}
}
}
default:
{
break;
}
}
result = CWnd::WindowProc(message, wParam, lParam);
}
catch (...)
{
}
return result;
}
I am setting the tool using the following code
mLeftToolTip.AddTool(this, szToolTip, borderarea, ID_SPLITTER_TOOLTIP);
Though in windowproc RelayEvent is getting called for mouse movements but the tooltip is not getting displayed.
Thanks
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When you move the mouse on the border of a window you get WM_NCMOUSEMOVE[^] and friends, not WM_MOUSEMOVE and his buddies. Althorough i doubt the tooltip control would react on these...maybe you could try "transforming" the non-client messages to client-messages when relaying to the tooltip.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
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Hi, thanks for replaying. I tried NC messages also but they are also not working. My doubt is that whether we can display tooltip for a region in a dialog or not.
Thanks
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Am not completely sure but it should work since as far as i know the dialog, from the perspecfive of the tooltip is just a CWnd like any other... How did you create the region you specified for it, what coords did you use?
I think what you could do is to somehow calculate the border area's position in client coordinates and add these to the tooltip. Then, when WM_NCMOUSEMOVE comes in, convert the mouse coords to client coords of the window, and feed these to the tooltip with WM_MOUSEMOVE instead of WM_NCMOUSEMOVE. No idea if this would work or not, but it might be worth a try. So i mean something like this:
...
case WM_NCMOUSEMOVE:
{
CPoint Pt(lParam);
ScreenToClient(Pt);
MSG msg;
msg.hwnd = m_hWnd;
msg.message = WM_MOUSEMOVE;
msg.wParam = wParam;
msg.lParam = MAKELPARAM(Pt.x, Pt.y);
mLeftToolTip.RelayEvent(&msg);
}
...
[edit] Hey, i just tryed it out, you don't need all this fancypants "message converting" thing, if you feed the tooltip the coordinates of the borders in client-space then it will work flawlessly.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
modified on Wednesday, February 25, 2009 8:34 AM
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Hi, Its working.
Thanks a lot.
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I have a set of Files, used by my Applications as a Database. These files are accessed directly by my software, and are stored on one of the machines forming a 'Peer to Peer' Network.(16 Terminals Max). The End users are generally oblivious to the existence of these files. All Opening, Closing, Reading or Writing is done transparently, without the user being aware of this happening. In fact, the users are mostly not aware of the existence of File Systems.
Actually, The location of the Database should not be disclosed to anybody else but Registered Power Users.
All Terminals are logged in to the network as 'Administrator'
It is of course an imperative for the system that the 'File System' should be visible to All Users on the Local Network.
I Currently install the Database under:-
'c:\Program Files\MyCompany\AppName\Data'
Question:
What Directory should I select in my Setup Code to ensure a clean Setup in Vista.
Regards 
Bram van Kampen
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My application used to argument (with argv[1]: filename). How to get fullpath from filename via argv[1]. For example, [myapp.exe input.txt]. 
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What's wrong with
fullpath(argv[1]);
??
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I'm assuming that you are passing in the argument so the caller would need to pass it in. Many windows functions look for the file name in the order of current directory then traverse the path. But if you need to get the entire file name that will have to be passed in.
If the file is in the current directory you can use findfirstfile findnextfile functions.
a programmer traped in a thugs body
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If you want the fullpath relative to the current working folder you can use the _fullpath function as mentioned by W. Kleinschmit.
If you want to search for the file and then get the full path of that file you can use PathFindOnPathAPI.
«_Superman_»
I love work. It gives me something to do between weekends.
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Hi I got a project which involves interprocess communication. I uses pipes because it's only happend in one machine. It seems everything should be perfect. However, When I try to connect The Client and The Server. I always have an Error number 231 ( All pipe instances are busy) when I try to create file in client side.
Client --> Create File, Write File
Server --> Create Named Pipes, Read File
here is some of the code in my programs
m_hPipeHandle = INVALID_HANDLE_VALUE;
m_hPipeHandle = CreateFile(ISOCOMSPIPE,GENERIC_WRITE,FILE_SHARE_WRITE,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
if(m_hPipeHandle == INVALID_HANDLE_VALUE)
{
int iRet = GetLastError();
printf("Error number %d",iRet);
}
closeHandle(m_hPipeHandle);
Is there anything wrong in the attributes/ missing attributes when I want to create the file ?
Thx
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https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=99331[^]
Can someone check to see if the above bug was fixed in VC++ 2008.
I've got some code that is based on the assumption that virtual properties works, i want to know if i have to modify the code or upgrade to 2008.
...cmk
The idea that I can be presented with a problem, set out to logically solve it with the tools at hand, and wind up with a program that could not be legally used because someone else followed the same logical steps some years ago and filed for a patent on it is horrifying.
- John Carmack
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You'll have to modify the code - that behaviour is still present in VS2008
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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Based on their bug response i'm not too surprised.
Thanks for checking, i really didn't want to install VC 2008 Express just to check.
...cmk
The idea that I can be presented with a problem, set out to logically solve it with the tools at hand, and wind up with a program that could not be legally used because someone else followed the same logical steps some years ago and filed for a patent on it is horrifying.
- John Carmack
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Hi all,
I have written a Javascript code that moves a dot around the screen randomly, and it does output my result at the end of the code, however I feel I have gone as far as I can with this code and would like a different way to create the program. First thought was using C++,
Here is the code:
<code> "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta http-equiv="Content-Style-Type" content="text/css">
<meta http-equiv="Content-Script-Type" content="text/javascript">
<style type="text/css">
body {
overflow:hidden;
}
#container div,#timer {
width:250px;
line-height:30px;
padding-left:10px;
border:3px double #999;
margin:4px 0;
}
.hide {
display:none;
}
#dot {
width20px;
font-size:36px;
color:#f00;
position:absolute;
}
#coords {
padding:10px;
border:3px double #999;
margin-top:10px;
font-family:courier,monospace;
font-size:12px;
text-align:justify;
}
</style>
<script type="text/javascript">
/****** these values may be edited *****/
var iterations=2000;
var height=999;
var width=999;
var temp1=500;
var temp2=500;
/***************************************/
var speed=10;
var c=0;
var ur=0;
var ul=0;
var dr=0;
var dl=0;
var s=0;
var xc=0;
var yc=0;
if(window.addEventListener){
window.addEventListener('load',randomtest,false);
}
else {
if(window.attachEvent){
window.attachEvent('onload',randomtest);
}
}
function randomtest(){
secs=Math.floor((iterations-c)*speed/1000);
x=Math.floor(Math.random()*width);
y=Math.floor(Math.random()*height);
document.getElementById('coords').innerHTML+=x+':'+y+', ';
document.getElementById('dot').style.left=x+'px';
document.getElementById('dot').style.top=y+'px';
if((x>=temp2)&&(y>=temp1)) {
ur++;
temp1=x;
temp2=y;
}
else {
if((x<=temp2)&&(y>=temp1)) {
ul++;
temp1=x;
temp2=y;
}
else {
if((x>=temp2)&&(y<=temp1)) {
dr++;
temp1=x;
temp2=y;
}
else {
if((x<=temp2)&&(y<=temp1)) {
dl++;
temp1=x;
temp2=y;
}
}
}
}
c++;
xc=xc+x;
yc=yc+y;
if(c>iterations) {
clearTimeout(rnd);
document.getElementById('timer').className='hide';
document.getElementById('dot').className='hide';
document.body.style.overflow='visible';
document.getElementById('upright').firstChild.nodeValue='up right total='+ur;
document.getElementById('upleft').firstChild.nodeValue='up left total='+ul;
document.getElementById('downright').firstChild.nodeValue='down right total='+dr;
document.getElementById('downleft').firstChild.nodeValue='down left total='+dl;
document.getElementById('container').className='';
document.getElementById('coords').className='';
alert('average coords are n\nx='+Math.round(xc/c)+'\ny='+Math.round(yc/c));
return;
}
document.getElementById('timer').firstChild.nodeValue='time remaining : '+secs+' seconds.';
rnd=setTimeout('randomtest()',speed);
}
</script>
</meta></meta></meta></head>
<body>
<div id="timer"> </div>
<div id="container" class="hide">
<div id="upright"> </div>
<div id="upleft"> </div>
<div id="downright"> </div>
<div id="downleft"> </div>
</div>
<div id="dot">•</div>
<div id="coords" class="hide"></div>
</body>
</html>
</code>
Can anyone help out with some C++ code to get me started? I would be forever greatful.
Skie
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A thumbwheel switch (swt) has been assigned a 16 element array to determine which number is selected. How would I access that data?
When I try *swt, I recieved error messages and warnings. When I use swt[0-16], I get zeroes as the switch values.
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Without actually seeing your code and if you are using
swt[0-16]
Then the actual index into the array is -16.
Larry J. Siddens
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Original code looks like this:
if (local->decode)
{
swt[0] = 0;
swt[1] = 1;
swt[2] = 1;
swt[3] = 1;
up to [15]
}
locals->temp = 0;
for (mode_index = 0; mode_index < 16; mode_index++)
{
if (swt[mode_index] == 1)
{
locals->temp += (1 << mode_index);
}
}
====================================
What I am attempting to do looks like this where I tried *swt and swt[0], swt[1], swt[2], etc...:
nom3as = nim3as
if (nom3as == 0)
nom3ac = 0;
else
nom3as |= 0x00002000;
nom3ac = swt;
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In your last line:
nom3ac = swt;
You're setting the variable nom3ac to the address of the start of the array (or the address of swt[0].)
Is this correct?
Larry J. Siddens
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What about a good C language tutorial?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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