troubles on using scroll bar in frame
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hi all..I want to make a dialog that can be resize with HScroll and VScroll. But when I tried the program, the dialog window can be resized, but the scroll doesn't work(I added the scroll using class wizard by right-clicking the dialog window, go to properties, and checked horizontal scroll and vertical scroll). Pls help... thx.
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hi all..I want to make a dialog that can be resize with HScroll and VScroll. But when I tried the program, the dialog window can be resized, but the scroll doesn't work(I added the scroll using class wizard by right-clicking the dialog window, go to properties, and checked horizontal scroll and vertical scroll). Pls help... thx.
Scroll doesn't work by itself, you need to catch the scroll events, and make sure your code adjusts it's display accordingly. You also need to set the range of the scroll bars. Christian Graus - Microsoft MVP - C++
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Scroll doesn't work by itself, you need to catch the scroll events, and make sure your code adjusts it's display accordingly. You also need to set the range of the scroll bars. Christian Graus - Microsoft MVP - C++
how to implement it? Can u give some tutorials,articles,or some link that can be helpful..pls thx
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how to implement it? Can u give some tutorials,articles,or some link that can be helpful..pls thx
What version of VC are you using ? Whatever it is, you can set an event handler for each of the two scroll events ( but if I know which one, I can tell you exactly where ), and then you force a redraw with Invalidate(), and your drawing code takes the scroll position into account. I don't know of any tutorials, off hand, sorry. I'd be surprised if this site didn't have any. Christian Graus - Microsoft MVP - C++
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What version of VC are you using ? Whatever it is, you can set an event handler for each of the two scroll events ( but if I know which one, I can tell you exactly where ), and then you force a redraw with Invalidate(), and your drawing code takes the scroll position into account. I don't know of any tutorials, off hand, sorry. I'd be surprised if this site didn't have any. Christian Graus - Microsoft MVP - C++
I'm using VC 6.0. I already make the event handler. On where I should write my drawing code? Btw...what is the keyword for finding thw tutorials(I try "repainting window" keyword, but I didn't find any suitable articles) thx...
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I'm using VC 6.0. I already make the event handler. On where I should write my drawing code? Btw...what is the keyword for finding thw tutorials(I try "repainting window" keyword, but I didn't find any suitable articles) thx...
firebolt77 wrote: On where I should write my drawing code Drawing code is ALWAYS in OnPaint. Invalidate(); is all the code you need to put in a scroll event to force a repaint. Christian Graus - Microsoft MVP - C++
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firebolt77 wrote: On where I should write my drawing code Drawing code is ALWAYS in OnPaint. Invalidate(); is all the code you need to put in a scroll event to force a repaint. Christian Graus - Microsoft MVP - C++
Thx...but I'm still confuse on the drawing code :) I'm still new in MFC so I'm still lack of knowledge in MFC thx anyway..
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Thx...but I'm still confuse on the drawing code :) I'm still new in MFC so I'm still lack of knowledge in MFC thx anyway..
Well, what are you drawing ? How do you draw it now ? Christian Graus - Microsoft MVP - C++
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Well, what are you drawing ? How do you draw it now ? Christian Graus - Microsoft MVP - C++
just ordinary dialog box with tab control, tree control, button, edit box, etc. I want the dialog box can be resize to smaller size, and I can use the scroll bar to see all of the frame. Sorry for the bad english...but I hope you understand what I mean :) thx..
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just ordinary dialog box with tab control, tree control, button, edit box, etc. I want the dialog box can be resize to smaller size, and I can use the scroll bar to see all of the frame. Sorry for the bad english...but I hope you understand what I mean :) thx..
Oh, OK. Well, I'd have thought a CFormView would handle that by itself. There's no painting involved here - your controls all need to be on some sort of control that you can position, otherwise you need to call SetWindowPos on all of them to move them, which is kind of ugly. Christian Graus - Microsoft MVP - C++
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Oh, OK. Well, I'd have thought a CFormView would handle that by itself. There's no painting involved here - your controls all need to be on some sort of control that you can position, otherwise you need to call SetWindowPos on all of them to move them, which is kind of ugly. Christian Graus - Microsoft MVP - C++
hmm..but I'm using CDialog base class. Can I use the method? thx..
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hmm..but I'm using CDialog base class. Can I use the method? thx..
Yeah, I guessed that. You need to do what I said as an alternative, get a blank control ( that is, one that gives you a surface, but nothing on it, probably the control base class ), set out all your controls on that, and move it's location using SetWindowPos in response to the scroll bars. So the scroll range for X is the width of your control - the width of the window, and the same for the Y. Then when your scroll event occurs, you set the window position of the control to be the offset of the scroll pos, so if hte X scrollbar is set to 20, then the X position is -20, so the first twenty pixels of the control are to the left of the left edge of the main window. Christian Graus - Microsoft MVP - C++
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Yeah, I guessed that. You need to do what I said as an alternative, get a blank control ( that is, one that gives you a surface, but nothing on it, probably the control base class ), set out all your controls on that, and move it's location using SetWindowPos in response to the scroll bars. So the scroll range for X is the width of your control - the width of the window, and the same for the Y. Then when your scroll event occurs, you set the window position of the control to be the offset of the scroll pos, so if hte X scrollbar is set to 20, then the X position is -20, so the first twenty pixels of the control are to the left of the left edge of the main window. Christian Graus - Microsoft MVP - C++
ok thx...I will try it