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I have a bitmap resource in my application. Can somebody please wither explain to me how to make the bitmap disappear when clicking on a button or, give me sample code to do this.
Greatly Appreciated.
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Can someone please explain to me how i can get a bitmap inside of my application to disappear with the push of a button?
Thanks!
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where is the bitmap? is it a CStatic control you've put in a dialog, or what? details?
-dz
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I have it in a dialog window, it is a CStatic control. I have made a function that sorts through a small database of people and i also want their picture to show up that i have loaded in the resources. I dont know how to do that and im searching frantically to do so. So if i figure out how to do that, then i'll probably figure out how to make them disappear.
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Try with m_yourBitmap.SetBitmap(IDB_BITMAP) to set the bitmap IDB_BITMAP as stored in your resources, and m_yourBitmap.SetBitmap(NULL) to clear it up. Remeber your CStatic has to have the SS_BITMAP style.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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I don't remember what entry-point I must specified in an MFC project file when I compile in UNICODE. Could you help me ? Thanks.
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Hi!
I want to get the message when the left mouse button is down on a tree ctrl. But this tree ctrl is of type CTreeCtrl and not of any class derived from CTreeCtrl. So, when I add a handler for this message in the dialog that holds this tree ctrl, it doesn't recieve this message! It recives only when the left mouse is down on the dlg and not when it is down on the tree ctrl. How can I get this message when the left mouse button is down on the tree ctrl.
Thanks,
NC
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what do you mean by
" But this tree ctrl is of type CTreeCtrl and not of any class derived from CTreeCtrl. "
anyway,add the handler when the id of the tree is selected in the id list of the class wizard.you might have added for the dialog itself.
bye.
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Hi!
Thanks for replying.
There is not WM_LBUTTONDOWN for the tree ctrl. How else can I add this to message map and also add a handler?
Thanks,
NC
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You need to Know if the pointer is in the TreeCtrol....
Get the mouse Pointer Position and ask if into the Square that define the control
Carlos Antollini.
Sonork ID 100.10529 cantollini
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Hi!
Thanks for answering.
Where do I check if the mouse position is on the tree ctrl?
Thanks,
NC
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You can use CRect::PtInRect where the point is the mouse pointer and the Rect the TreeControl coordinates. Don't forguet to call CRect::NormalizeRect Before to call PtInRect 
Carlos Antollini.
Sonork ID 100.10529 cantollini
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You can use CRect::PtInRect where the point is the mouse pointer and the Rect the TreeControl coordinates. Don't forguet to call CRect::NormalizeRect Before to call PtInRect
Regards
Carlos Antollini.
Sonork ID 100.10529 cantollini
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As you want to handle the WM_LBUTTONDOWN before it goes to the TreeCtrl, I would override PreTranslateMessage() as follows:
BOOL CYourDialog::PreTranslateMessage(MSG* pMsg)
{
if (pMsg->message == WM_LBUTTONDOWN)
{
CPoint p ;
GetCursorPos(&p) ;
CWnd *pWnd = GetWindowFromPoint(p) ;
if (pWnd != NULL)
{
if (pWnd->GetDlgCtrlID() == ID_OF_TREE_CTRL && pWnd->GetParent() == this)
{
}
}
}
return CDialog::PreTranslateMessage(pMsg);
}
Its all written from memory, so some calls/parameters etc may not be correct, but it should do something close to what you need.
Roger Allen
Sonork 100.10016
If I'm not breathing, I'm either dead or holding my breath.
A fool jabbers, while a wise man listens. But is he so wise to listen to the fool?
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Hi, I am trying to use GetActiveIndex() in the property sheet to get the index of an active page. I encountered a problem in GetTabControl() which returns 0xcccccccc. I believe the setup of my property sheet and pages should be right by using DoModal() and AddPage(). Please give me some suggestions on troubleshooting this problem. Thanks!
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Are you calling GetTabControl before DoModal?
Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **
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I called GetActiveIndex() after DoModal() and Addpages(). If I go straight to display data on the first page, it works fine when I am on the first page and vice versa on the other pages. However, I would like to display data by the active page which gives me more flexability.
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Hi, I'm trying to create a save dialog box with 2 filters. How can i update the extention in the filename whenever the "Save As Type" box is highlighted.
Thanks
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I've just started learning how to debug, and I'm still kinda new with C++ programming language.
I have two variables declared as doubles: x, slope
while debugging, I noticed that sometimes in the loop they're values came up as:
slope = 1.#INF000000000
x = -1.#IND000000000
what does that mean?....why does it happen?
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(EDIT: Corrections)
1.#INF stands for positive infinity.
1.#IND stands for positive ideterminite.
If you add a negative, then they are negative infinity.
This can happen if a variable has yet to be initialized. It can also happen during ASCII to float conversions and math operations.
Tim Smith
I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?
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So can I use that value just like other values in my code, for example in an if statement, could I say:
if(x==1.#INF)
{
//do stuff
}
or when I say
if(x>=9000)
{
//do stuff
}
will the infinite value be regarded as greater than 9000?
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You can use _finite to test to see if a value is finite. Thus your NAN, QNAN, INF, IND should return false. (???)
Tim Smith
I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?
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1.#INF means positive infinity - usually you get it when you divide by zero. 1.#IND represents so-called 'quiet-nan' - for example, when you take the logarithm of negative value.
Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **
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So can I use that value just like other values in my code, for example in an if statement, could I say:
if(x==1.#INF)
{
//do stuff
}
or when I say
if(x>=9000)
{
//do stuff
}
will the infinite value be regarded as greater than 9000?
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