C / C++ / MFC

Re: how to call a dialog in DLL containing Active X - Date Time Picker

27-May-07 17:50

can you show me how you called the dialog from the exe?

prash pissey wrote:
can you please try it once, and tell me if it works

nave

prashant pissey27-May-07 18:25

Re: how to call a dialog in DLL containing Active X - Date Time Picker

27-May-07 18:25

hi naveen,

here is he code

extern "C" __dllspec(dllexport) void CallDate()
{
AFX_MANAGE_STATE( AfxGetStaticModuleState());
CDateTimeDlg DateTimeDlg;
DateTimeDlg.DoModal();
}

thanks and regards
prashant

Naveen27-May-07 18:29

Re: how to call a dialog in DLL containing Active X - Date Time Picker

27-May-07 18:29

did u try removing that activex from the dialog?

where did u get this datetimectrl ActiveX? Is it the normal Date Time control among the windows common controls?

nave

prashant pissey27-May-07 18:39

Re: how to call a dialog in DLL containing Active X - Date Time Picker

27-May-07 18:39

hi nave,

it is Microsoft Date Time Picker control.

open VC++ go to dialog editor ,

right click, you will get a menu,

select "insert Active X",

a list of Active x components will appear.

in the list select "Microsoft Date Time Picker Control".

i have tried to remove the active X component and calling the DLL dialog.

then the dialog appears,works fine.

i suspect that acive x is causing the problem

thanks and regards
prashant
thanks and

Naveen27-May-07 19:02

Re: how to call a dialog in DLL containing Active X - Date Time Picker

27-May-07 19:02

ok I got the pblm. Put AfxEnableControlContainer(); in the InitInstance() function of the dll and then try.

nave

prashant pissey28-May-07 20:20

Re: how to call a dialog in DLL containing Active X - Date Time Picker

28-May-07 20:20

hi naveen,

i tried by adding AfxEnableControlContainer(); in the InitInstance() function of the dll . it didn't work.

if you have code sample. pls give it to me.

prashant

Naveen28-May-07 20:22

Re: how to call a dialog in DLL containing Active X - Date Time Picker

28-May-07 20:22

send me your mail id...

nave

prashant pissey28-May-07 22:32

Active Accessibilty, getting Font properties

28-May-07 22:32

hi naveen,

here is my mail id

pissey123@indiatimes.com

thanks and regards
prashant

avirib27-May-07 0:14

avirib

27-May-07 0:14

I"m building a screen reader for my college project and I need to detect
words by the cursors position. Active Accessibilty(aac) is doing the job
well, but it gives me a full sentence and not the specific word in the
sentence where the mouse coursor is pointing at. For the ability to get this
word I need the Font properties, mainly width and height, of this acc
object. I need something like GetTextExtent but for the AccObject.

So how can I get the Font properties of an ActiveAccessibilty Object?

Bmp

dodoxor26-May-07 23:01

dodoxor

26-May-07 23:01

Hi to everyone, i have this code that tansform an IlpImage* in a bmp format..
char* bitmap_buf;
IplImage* image;
BITMAPINFOHEADER InfoBitmapHdr;
BITMAPFILEHEADER BitmapHdr;

image=cvLoadImage("nome_file.ext",1);
memset(&InfoBitmapHdr, 0, sizeof(BITMAPINFOHEADER));
memset(&BitmapHdr, 0, sizeof(BITMAPFILEHEADER));

InfoBitmapHdr.biWidth = image->width;
InfoBitmapHdr.biHeight = image->height;
InfoBitmapHdr.biSize = sizeof(BITMAPINFOHEADER);
InfoBitmapHdr.biPlanes = 1;
InfoBitmapHdr.biBitCount = 24;
InfoBitmapHdr.biSizeImage = image->imageSize;

BitmapHdr.bfType = 0x4d42;
BitmapHdr.bfSize = (DWORD) image->imageSize + sizeof(BITMAPFILEHEADER);
BitmapHdr.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + InfoBitmapHdr.biClrUsed * sizeof (RGBQUAD);

bitmap_buf= new char[image->imageSize];
memcpy( bitmap_buf, (char*)&BitmapHdr, sizeof(BITMAPFILEHEADER));
memcpy( bitmap_buf + sizeof(BITMAPFILEHEADER), (char*)&InfoBitmapHdr, sizeof(BITMAPINFOHEADER));
memcpy( bitmap_buf + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER), (char*)image->imageData, image->imageSize - 60);

Can you tell me which variable must i use to visualize the bmp in a picture box of a window form application in visual c++??
Thanks for answers, regards.

Mark Salsbery27-May-07 10:24

Mark Salsbery

27-May-07 10:24

You have all the info you need to use CreateDIBSection() to create a HBITMAP that can be set to
a picture box.

Even without a picture box, you could use StretchDIBits() with a BITMAPINFO and a pointer to
the image bits to draw the image diectly on a window.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

dodoxor27-May-07 23:59

dodoxor

27-May-07 23:59

Thanks Mark, i see form msdn the definition of hBitmap = CreateDIBitmap(hDC, lpInfo, CBM_INIT, lpBits, lpInfo,wUsage); but i can't associate my variable to that are required in the function. For example hdc(where is in my code??), lpinfo( InfoBitmapHdr.biWidth),CBM_INIT,lpbits(??),lpinfo(InfoBitmapHdr.biHeight),wUsage(??)
Thanks for answers, regards.

Mark Salsbery28-May-07 6:38

Mark Salsbery

28-May-07 6:38

A BITMAPINFOHEADER is part of the BITMAPINFO struct required by CreateDIBSection().

The HDC is only used for bitmaps requiring a color table. The palette selected into the DC
is used by CreateDIBSection() to construct a color table when necessary. Since you have 24-bit
pixels it's not needed. You can use a screen DC.

I haven't used IplImage but based on what I've seen, the imageSize member is the size of just
the pixel data, not pixel data with Windows BITMAPINFO stuff attached. If I'm wrong you'll
have to adjust the following code a bit Smile | :)

Here's a modified version of your sample code. Note that this code is hardwired for 24-bit
images...

BYTE* bitmap_buf;
IplImage* image;
BITMAPINFO bmi;
 
image=cvLoadImage("nome_file.ext",1);
 
memset(&bmi, 0, sizeof(BITMAPINFO));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = image->width;
bmi.bmiHeader.biHeight = image->height;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB; 
bmi.bmiHeader.biSizeImage = image->imageSize;
//bmi.bmiHeader.biXPelsPerMeter = 0; 
//bmi.bmiHeader.biYPelsPerMeter = 0; 
//bmi.bmiHeader.biClrUsed = 0; 
//bmi.bmiHeader.biClrImportant = 0; 
 
HDC hdc = ::GetDC(0);
HBITMAP hBitmap = ::CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, &bitmap_buf, NULL, 0);
::ReleaseDC(0, hdc);
 
if (hBitmap)
{
   memcpy( bitmap_buf, image->imageData, image->imageSize );
 
   // do stuff with the new HBITMAP
   ...
}

*EDIT*
I looked up the IplImage structure. I'm not sure what the default alignment of rows of pixel
data is in OpenCV, but for a Windows DIB, rows must be aligned to a DWORD (4-byte) boundary.
If this does not match the IplImage alignment (based on image->widthStep) then your resulting
bitmap will look skewed Smile | :)

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

How to do a listbox that have columns in different width?

dodoxor28-May-07 22:03

dodoxor

28-May-07 22:03

Thanks for answers,it's very useful.
There's a prolem when i try to compile:
HBITMAP hBitmap = ::CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, &bitmap_buf, NULL, 0);
generate error C2664: 'CreateDIBSection' : cannot convert parameter 4 from 'BYTE **' to 'void **'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
so i try to do a safe cast, i add this line before the CreateDIBSection
void* buff=safe_cast<void *="">(bitmap_buf);
and use &buff instead of bitmap_buf in CreateDIBSection but the result is a list of build error:

error LNK2028: unresolved token (0A0002FA) "extern "C" int __stdcall ReleaseDC(struct HWND__
*,struct HDC__ *)" (?ReleaseDC@@$$J18YGHPAUHWND__@@PAUHDC__@@@Z) referenced in function "private: void __clrcall WinCam::Form1::capimgbut_Click(class System::Object ^,class System::EventArgs ^)" (?capimgbut_Click@Form1@WinCam@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)

WinCam.obj : error LNK2028: unresolved token (0A0002FB) "extern "C" struct HBITMAP__ * __stdcall CreateDIBSection(struct HDC__ *,struct tagBITMAPINFO const *,unsigned int,void * *,void *,unsigned long)" (?CreateDIBSection@@$$J224YGPAUHBITMAP__@@PAUHDC__@@PBUtagBITMAPINFO@@IPAPAXPAXK@Z) referenced in function "private: void __clrcall WinCam::Form1::capimgbut_Click(class System::Object ^,class System::EventArgs ^)" (?capimgbut_Click@Form1@WinCam@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
...and so on.

I don't know why...
Thanks however for help.
Regards.

Chen-XuNuo26-May-07 22:26

Chen-XuNuo

26-May-07 22:26

How to do a listbox that have columns in different width?

Re: How to do a listbox that have columns in different width?

Anurag Gandhi26-May-07 22:42

Anurag Gandhi

26-May-07 22:42

You can use CListViewCtrl if you want more than one column with different width.
For more information on how to use it, Search google.

Anurag Gandhi.

Re: How to do a listbox that have columns in different width?

Chen-XuNuo27-May-07 2:14

Chen-XuNuo

27-May-07 2:14

Is CListViewCtrl same as CListCtrl?

Re: How to do a listbox that have columns in different width?

Hamid_RT28-May-07 8:34

Hamid_RT

28-May-07 8:34

Im not sure but I think I saw like your answer some time ago and I answered to its question with an example(I think it was with CListCtrl) search on the Search comments. Smile | :)

WhiteSky

resizing a group box control during runtime

SWDevil26-May-07 22:01

SWDevil

26-May-07 22:01

I would like to resize a group box control during run-time (for instance in the OnInitDialog function). I only need to change it's height (make it smaller).
How can I do this?

I tried the following (which didn't work..):

CRect rect;
GetDlgItem(IDC_STATIC_GRP_SEARCH)->GetClientRect(rect);
rect.SetRect(11,280,66,280);
rect.DeflateRect(0,0,0,rect.Height()-50);

SetRect did not work so I tried using DeflateRect - and that also did not work.

Please help...

Michael Dunn26-May-07 22:20

Michael Dunn

26-May-07 22:20

You're changing a RECT, but you still need to change the size of the control. SetWindowPos() will do that.

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Dunder-Mifflin, this is Pam.

Arman S.27-May-07 1:42

Arman S.

27-May-07 1:42

Then set the modified rect back to the control. Use either of;
SetWindowPos
MoveWindow

--
=====
Arman

SWDevil27-May-07 2:15

SWDevil

27-May-07 2:15

I don't understand - do I have to call setRect and afterwards call setWindowPos or MoveWindow, or do I not need to call setRect?

I tried adding a call to setWindowPos as following:

CRect rect;
GetDlgItem(IDC_STATIC_GRP_SEARCH)->GetClientRect(rect);
rect.SetRect(11,280,66,280);
MoveWindow(11,280,198,66);

but it just ends up changing the size of the whole dialog and not the control itself....

if you could please write an example of the code it would be very helpful.