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, 2 Sep 2005
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Showing an image in a CStatic control.

Sample Image - PreviewCtrl.jpg


Drawing a CBitmap into a CStatic is a piece of cake. At least if you stop to mess around with CStatic::SetBitmap(). To get some running code, I derived CPreviewRect from CStatic and implemented the display routines manually. This small application demonstrates its usage.


  • The shown images are resizable and always shown in correct aspect ratio.
  • The shown images can be resized to thumbnail size to save up memory and to speed up drawing.
  • The shown images can be specified by:
    • a path name
    • a resource ID
    • another CBitmap
    • raw RGB data (in conjunction with width and height information)
  • Compared to CStatic::SetBitmap() it works.


CStatic::SetBitmap() drove me mad.

Using the code

Guess you have a dialog with a CStatic control on it, and you want to show loaded bitmaps in this control. First of all please make sure that the control's name differs from IDC_STATIC and create a related member variable. Now modify your code as follows:

In your dialog's header file:

// change the control's class from CStatic to CPreviewRect
CPreviewRect m_bitmap;

In your FileOpen handler:

// create your file dialog
                    "Bitmaps (.bmp)|*.bmp|All files(*.*)|*.*||");

// ask user
if (dlg.DoModal() == IDCANCEL) return;

// load the selected bitmap file

// check recent file operation (IsInitialized() should return TRUE)
if (!m_bitmap.IsInitialized())
    // load error bitmap from a resource (if you have any)

// resize bitmap to save up memory and speed up drawing
m_bitmap.CreateThumbnail(320, 240);

That's it!


Version 1.1


  • BorrowBitmap(CBitmap* pBitmap)


  • CreateBitmap(CBitmap* pBitmap) has been renamed to CopyBitmap(CBitmap* pBitmap)

Version 1.0


  • LoadBitmap(const CString& Path)
  • LoadBitmap(UINT nIDResource)
  • CreateBitmap(CBitmap* pBitmap)
  • CreateBitmap(int Width, int Height, unsigned char* BGRA)
  • CreateThumbnail(int MaxWidth, int MaxHeight)
  • Reset(BOOL GraphicalUpdate = TRUE)


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About the Author

Achim Klein
Web Developer
Germany Germany
No Biography provided

Comments and Discussions

GeneralOnly horizontal resizing. . PinmemberVarchas R S28-Nov-08 0:31 
General[Message Removed] Pinmemberimmetoz4-Oct-08 3:01 
GeneralThanks a lot! Pinmemberrehanone17-Jul-08 4:12 
Generalthanks !!! Pinmemberjofavi7-Apr-07 14:57 
GeneralWonderful Pinmemberdel Fuego2-Feb-07 7:31 
GeneralSuperb PinmemberExpategghead6-Mar-06 1:15 
GeneralThenk you, PinmemberStaon15-Jan-06 23:33 
QuestionHow to save CBitmap to file Pinmembercaykahve24-Dec-05 10:39 
QuestionWay cool error message/bmp Pinmemberradeutsch7-Sep-05 3:07 
AnswerRe: Way cool error message/bmp PinmemberAchim Klein8-Sep-05 1:47 
GeneralDOxygen Pinmemberthudriact2-Sep-05 3:08 
GeneralRe: DOxygen PinmemberAchim Klein8-Sep-05 2:27 
GeneralIt's simple PinmemberCandleLight6662-Sep-05 1:58 
GeneralThank you! PinmemberMichael Kane2-Sep-05 1:49 

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