get_LocationURL function returns empty string - C / C++ / MFC Discussion Boards

Re: How to find - which area of Window made "invalid" ?

Prakash Nadar1-Apr-04 22:44

Prakash Nadar

1-Apr-04 22:44

vgrigor wrote:
How to set for control another Client area ?

I didnt get your question.

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"If history isn't good, just burn it." - Sidhuism.

Re: How to find - which area of Window made "invalid" ?

vgrigor1-Apr-04 22:49

vgrigor

1-Apr-04 22:49

Need to enlarge child window area,
ao hay react according to event on that other area.

Re: How to find - which area of Window made "invalid" ?

Prakash Nadar1-Apr-04 22:53

Prakash Nadar

1-Apr-04 22:53

If you have the pointer to the child window or a window handle to that child window then you can use SetWindowRect(...) to resize the window.

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Re: How to find - which area of Window made "invalid" ?

vgrigor1-Apr-04 23:04

vgrigor

1-Apr-04 23:04

thanks, but it is need to get size to
draw as previously.

But react as bigger thing.

some clipRect function does not that ?

Re: How to find - which area of Window made "invalid" ?

Prakash Nadar1-Apr-04 23:15

Prakash Nadar

1-Apr-04 23:15

Sorry i am out of ideas Frown | :-(

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Re: How to find - which area of Window made "invalid" ?

vgrigor1-Apr-04 23:19

vgrigor

1-Apr-04 23:19

No problem - not all people here have ones.

Re: How to find - which area of Window made "invalid" ?

Mike Dimmick2-Apr-04 1:32

Mike Dimmick

2-Apr-04 1:32

GetUpdateRect / GetUpdateRgn, depending on whether you want to deal with the full complexity of a region, or just the rectangle that contains all the invalid parts.

Stability. What an interesting concept. -- Chris Maunder

get_LocationURL function returns empty string

Abhi Lahare1-Apr-04 19:45

Abhi Lahare

1-Apr-04 19:45

Hi ALL,
I want to retrive the URL of the currently displayed page for that I am using the following code
in SetSite() function:

<br />
SetSite() <br />
{<br />
CComBSTR bstrURL;<br />
hr = GetSite(IID_IServiceProvider, (void**)&spSrvProv);<br />
<br />
hr = spSrvProv->QueryService(SID_SWebBrowserApp,IID_IWebBrowser2,<br />
		(void**)&spWebBrowser);<br />
		<br />
if (FAILED(spWebBrowser->get_LocationURL(&bstrURL)))<br />
	return false;<br />
}<br />

But the contains of bstrURL is emtpy. where I am making a mistake?

Also want to know when Setsite function is invoked before or After loading the page,
When debugged its my guess that it is called before loading the page,
if this is the case how i can get the URL?

Can anyone please help me.

Thanks in Advance.
AL

How to display a bitmap file using CBitmap class?

P_JAYAPRAKASH1-Apr-04 19:08

P_JAYAPRAKASH

1-Apr-04 19:08

I have one BMP file. i want to load that bmp file into a form. Please tell me the procedure.

Thanks
JP

ALL THINGS ARE POSSIBLE UNTIL THEY ARE PROVED IMPOSSIBLE-AND EVEN THE IMPOSSIBLE MAY ONLY BE SO,AS OF NOW

Re: How to display a bitmap file using CBitmap class?

VulcanYang1-Apr-04 19:24

VulcanYang

1-Apr-04 19:24

In the OnDraw function write codes as follow

CBitmap img;
img.LoadBitmap(IDB_IMG);//IDB_IMG is ID of the resource.
CDC * pMemDC=new CDC;
pMemDC->CreateCompatibleDC(pDC);//pDC pointer to DC of current window
pMemDC->SelectObject(&startImg);
pDC->StretchBlt(0,0,cr.right,cr.bottom,pMemDC,0,0,1024,768,SRCCOPY);
delete pMemDC;

I am a Chinese and my English is very poor,so I wish you correct my mistake.

YangXiaowei(China)

Re: How to display a bitmap file using CBitmap class?

Member 9541232-Apr-04 2:07

Member 954123

2-Apr-04 2:07

CString szFilename("path to ur bmp file");
HBITMAP hBmp = (HBITMAP)::LoadImage(NULL,szFilename,
IMAGE_BITMAP,0,0,
LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp;
bmp.Attach(hBmp);
CClientDC dc(this);
CDC bmDC;
bmDC.CreateCompatibleDC(&dc);
CBitmap *pOldbmp = bmDC.SelectObject(&bmp);
BITMAP bi;
bmp.GetBitmap(&bi);
dc.StretchBlt (0,0,500,500,&bmDC,0,0,bi.bmWidth
,bi.bmHeight,SRCCOPY);
// please see the parameters for StretchBlt() and pass them accordingly

bmDC.SelectObject(pOldbmp);

pass through two level http proxy

handle_cn1-Apr-04 18:34

handle_cn

1-Apr-04 18:34

how to pass through two level http proxy? or are there any information article about it? thanks

char to Int conversion

CNewbie1-Apr-04 17:50

CNewbie

1-Apr-04 17:50

As the Thread title Suggests I am having a problem taking 2 chars (which make up a byte) from the array and placing it into an Integer Variable all the while allowing it to retain its value. I have books here that Explain Type Conversion, but it does not go into Copius Detail on char to int conversion.

The 2 char values I am trying to take from the array will end up being a HEX Value within the Integer Variable.

I am trying to do 2 things:

1). Convert 2 chars from the array into an Integer HEX Value
2). Convert that New HEX Valued Integer to a Decimal Integer Value.

For the Sake of this thread, I will give an example:

RawPacket[8] = 3
RawPacket[9] = 9

Now this comes from the following Data within the array:

[code]
4840200039 |Array Data
----------
0123456789 |Corresponding Array Position
[/code]

What I want to do is take that 3 and 9, put it together and put 39 into an int variable.

Then take that 39 and convert it into a decimal value which in this case would be 57.

Another Example:

[code]
484020005C |Array Data
----------
0123456789 |Corresponding Array Position
[/code]

What I want to do is take that 5 and C, put it together and put 5C into an int variable.

Then take that 5C and convert it into a decimal value which in this case would be 92.

I have had some algorithms given to me, but none of them worked.

Hopefully someone here can help me if possible.

Thank you

Re: char to Int conversion

alex12051-Apr-04 19:42

alex1205

1-Apr-04 19:42

I dont know if there would be a better way than this one. Please try this function:

#include <stdlib.h>
#include <iostream.h>

int Convert(char a, char b);

void main(){
cout << "" << Convert('A', 'A') << endl;
}

int Convert(char a, char b){
int intTemp, intVal = 0;
char strBuffer[3];

strBuffer[0] = a;
strBuffer[1] = '\0';

intTemp = atoi(strBuffer);

if (intTemp != 0){
intVal = intTemp << 4;
}
else{
switch (toupper(a)){
case 'A':
intVal = intVal | 0xA0;
break;
case 'B':
intVal = intVal | 0xB0;
break;
case 'C':
intVal = intVal | 0xC0;
break;
case 'D':
intVal = intVal | 0xD0;
break;
case 'E':
intVal = intVal | 0xE0;
break;
case 'F':
intVal = intVal | 0xF0;
break;
default:
return 0;
break;
}
}

strBuffer[0] = b;
strBuffer[1] = '\0';

intTemp = atoi(strBuffer);

if (intTemp != 0){
intVal = intVal | intTemp;
}
else{
switch (toupper(b)){
case 'A':
intVal = intVal | 0x0A;
break;
case 'B':
intVal = intVal | 0x0B;
break;
case 'C':
intVal = intVal | 0x0C;
break;
case 'D':
intVal = intVal | 0x0D;
break;
case 'E':
intVal = intVal | 0x0E;
break;
case 'F':
intVal = intVal | 0x0F;
break;
default:
return 0;
break;
}
}

return intVal;
}

SDE

Memory Device context

Member 9541231-Apr-04 17:39

Member 954123

1-Apr-04 17:39

Hi
I have 5 seperate Device contexts in which i load 5 bmp's and position them on the screen such that it looks as if it is 1 bmp.
How to combine these 5 dc's into 1.

Thanks and regards,
Salil

Re: Memory Device context

Prakash Nadar1-Apr-04 22:48

Prakash Nadar

1-Apr-04 22:48

I assume they are memory dc....

Cant you make one more memory dc and bitblt each dc onto this memory dc? this way you convert all 5 memdc's to one dc.

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"If history isn't good, just burn it." - Sidhuism.

Re: Memory Device context

Member 9541232-Apr-04 1:59

Member 954123

2-Apr-04 1:59

Hi,
This is how my OnDraw() looks like and i am having trouble scrolling it
Thanks and regards,
Salil.

CString szFilename("d:\\vc\\mfc\\2001.bmp");
HBITMAP hBmp = (HBITMAP)::LoadImage(NULL,szFilename,
IMAGE_BITMAP,0,0,
LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp;
bmp.Attach(hBmp);
CClientDC dc(this);
CDC bmDC;
bmDC.CreateCompatibleDC(&dc);
CBitmap *pOldbmp = bmDC.SelectObject(&bmp);
BITMAP bi;
bmp.GetBitmap(&bi);
dc.StretchBlt (0,0,len_in_pix,ht_in_pix,&bmDC,0,0,bi.bmWidth
,bi.bmHeight,SRCCOPY);
bmDC.SelectObject(pOldbmp);

CString szFilename1("d:\\vc\\mfc\\2002.bmp");
HBITMAP hBmp1 = (HBITMAP)::LoadImage(NULL,szFilename1,
IMAGE_BITMAP,0,0,
LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp1;
bmp1.Attach(hBmp1);
CClientDC dc1(this);
CDC bmDC1;
bmDC1.CreateCompatibleDC(&dc1);
CBitmap *pOldbmp1 = bmDC1.SelectObject(&bmp1);
BITMAP bi1;
bmp1.GetBitmap(&bi1);
dc1.StretchBlt (0,br_in_pix,len_in_pix,ht_in_pix,&bmDC1,0,0,bi.bmWidth
,bi.bmHeight,SRCCOPY);
bmDC1.SelectObject(pOldbmp1);

CString szFilename2("d:\\vc\\mfc\\2003.bmp");
HBITMAP hBmp2 = (HBITMAP)::LoadImage(NULL,szFilename2,
IMAGE_BITMAP,0,0,
LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp2;
bmp2.Attach(hBmp2);
CClientDC dc2(this);
CDC bmDC2;
bmDC2.CreateCompatibleDC(&dc2);
CBitmap *pOldbmp2 = bmDC2.SelectObject(&bmp2);
BITMAP bi2;
bmp2.GetBitmap(&bi2);
dc2.StretchBlt (0,br_in_pix+ht_in_pix,len_in_pix,br_in_pix,&bmDC2,0,0,bi.bmWidth
,bi.bmHeight,SRCCOPY);
bmDC2.SelectObject(pOldbmp2);

CString szFilename3("d:\\vc\\mfc\\2004.bmp");
HBITMAP hBmp3 = (HBITMAP)::LoadImage(NULL,szFilename3,
IMAGE_BITMAP,0,0,
LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp3;
bmp3.Attach(hBmp3);
CClientDC dc3(this);
CDC bmDC3;
bmDC3.CreateCompatibleDC(&dc3);
CBitmap *pOldbmp3 = bmDC3.SelectObject(&bmp3);
BITMAP bi3;
bmp3.GetBitmap(&bi3);
dc3.StretchBlt (0,2*br_in_pix+ht_in_pix,len_in_pix,ht_in_pix,&bmDC3
,0,0,bi.bmWidth,bi.bmHeight,SRCCOPY);

bmDC3.SelectObject(pOldbmp3);

CString szFilename4("d:\\vc\\mfc\\2005.bmp");
HBITMAP hBmp4 = (HBITMAP)::LoadImage(NULL,szFilename4,
IMAGE_BITMAP,0,0,
LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp4;
bmp4.Attach(hBmp4);
CClientDC dc4(this);
CDC bmDC4;
bmDC4.CreateCompatibleDC(&dc4);
CBitmap *pOldbmp4 = bmDC4.SelectObject(&bmp4);
BITMAP bi4;
bmp4.GetBitmap(&bi4);
dc4.StretchBlt (0,2*br_in_pix+2*ht_in_pix,len_in_pix,20,&bmDC4
,0,0,bi.bmWidth,20,SRCCOPY);

bmDC4.SelectObject(pOldbmp4);

Re: Memory Device context

John R. Shaw2-Apr-04 10:57

John R. Shaw

2-Apr-04 10:57

1) Create 2 compatible device contexts: a DC (dcTemp) to temporarly hold current bitmap and a DC (dcOut) to hold the results of bliting.
2) Create a compatible bitmap large enough to hold all 5 bmp's.
3) Select large bitmap into dcOut. (save pOldOutBitmap here)
4) Select bitmap[0] into dcTemp. (save pOldBitmap here - need when finished)
5) Determine what position to blit bigmap to.
6) Blit bitmap[0] (dcTemp) to position in dcOut.
7) Select bitmap[1] into dcTemp.
8) Determine what position to blit bigmap to.
9) Blit bitmap[1] (dcTemp) to position in dcOut.
....
// Now all the bitmaps are in 1 DC.
N) Select pOldBitmap (dcTemp.SelectObject(pOldBitmap);).
N+1) Blit result to client area (pDC->BitBlt(...,&dcOut,...);).
N+2) Select pOldOutBitmap (dcTemp.SelectObject(pOldOutBitmap);).

That is all there is to it.

If you want to increase draw speed then you should create the large bitmap as a member variable and then create a function to copy, using above method, the 5 bitmaps to it. That way you do not need to do all the coping in the OnDraw function, just blit the stored bitmap to the client area.

If you want to you could create an array of bitmap IDs and use a loop to preform the repeated select, calc. position, and dcOut blits. That is how I whould do it, because then to add another bitmap all you need do is add its ID to the array.

Well I hope this helps.
Good Luck!

INTP

Visual c++ 6.0 bitmap moving

Dimenser1-Apr-04 17:00

Dimenser

1-Apr-04 17:00

Maybe a newbie question, but I'll ask anyway. Using visual c++ 6.0, I click and drag a bitmap onto the dialog box, set it to a picture I've imported and there it is on the screen at runtime. Now say I want to click a button that would make that "static" bitmap move across the screen to another location by simply accessing the x,y cooridnates and doing some type of UpdateWindow? The code I've seen on here for pages and pages of DC rect this and that just seems a great deal to do for something that should be so simple.
thanx

Dimenser

Re: Visual c++ 6.0 bitmap moving

John R. Shaw2-Apr-04 11:10

John R. Shaw

2-Apr-04 11:10

There is nothing simple about it! It only looks that way to the user. Doing drag and drop is actualy easier, since Windows has built in support for that; otherwise it would be just as hard.

INTP

closing a messagebox window

bryce1-Apr-04 16:47

bryce

1-Apr-04 16:47

Hi have a messagebox window which has some text and an "OK" button
I have used EnumWindows to track down the handle to the messagebox window
from there i can get a cwnd* to the window.
I would like to know how to tell the messagebox to close by simulating a button click onthe OK button.
SPY++ tells me control id for the OK button is 2
so i figured a postmessage BN_CLICKED to the messagebox window with the ID set to 2 woudl work..but no luck

the messagebox needs to be closes properly not just hidden or minimized

does anyone have any suggestions/what am i missing?

regards
Bryce

---
Publitor, making Pubmed easy.
http://www.sohocode.com/publitor

Re: closing a messagebox window

Shog⁹1-Apr-04 17:23

Shog⁹

1-Apr-04 17:23

bryce wrote:
does anyone have any suggestions/what am i missing?

Just send it a WM_CLOSE message?

How do you move in a world of fog, That's always changing things? Makes me wish that i could be a dog, When i see the price that you pay.

Re: closing a messagebox window

bryce1-Apr-04 17:28

bryce

1-Apr-04 17:28

funny u should say that
thats excatly what i wound up doing ! Wink | ;)

great minds and all that
cheers
bryce

---
Publitor, making Pubmed easy.
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Re: closing a messagebox window

Shog⁹1-Apr-04 17:37

Shog⁹

1-Apr-04 17:37

Well, glad you got it. Smile | :)

As for the BN_CLICKED message, you may have needed to include the window handle as well as the ID in order for that to work.

How do you move in a world of fog, That's always changing things? Makes me wish that i could be a dog, When i see the price that you pay.

Error C2440 on porting from VC6 to VC++.NET

DionChen1-Apr-04 16:26

DionChen

1-Apr-04 16:26

Hi,

I am porting a MFC Dialog-based app from VC6 to VC++.NET. I have got the following error. I have user-defined message handler in the CMyTestApp, instead of CMyTestDlg, in the VC6 project. Does thiis error message tell me that I can not have my message handler in the CMyTestApp and the message handler has to be in the CWnd-derived class, such as CMyTestDlg?

Thansk in advance.

Dion

error C2440: 'static_cast' : cannot convert from 'LRESULT (__thiscall CMyTestApp::* )(WPARAM,LPARAM)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)'
None of the functions with this name in scope match the target type

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.