Rif.: Image-Controls in Panel / .uir stay empty / Bitmap images are not drawn

[razzzz]

Hello there, I can't find a solution and I am a beginner, so maybe it's a trivial thing to ask.

CVI 2013 SP2

Bitmaps to load: 24bit

In the .uir I added via right click menu: Picture , Classic-Style Controls --> picture ,  Canvas

I generated the code via .uir --> Code --> Generate --> All code

I want to load a .bmp file by clicking a button and then draw this .bmp in the panel, a picture element or whatever.

Loading seems to work:

memset(cUserSelection,0,1000);
 FileSelectPopup ("D:\\...",  "*.bmp", "*.*", "Select Image To Load",0,0,0,1,1,cUserSelection);

GetBitmapFromFile(cUserSelection, &iBitmapID);

SetCtrlBitmap(iPanelHandle,PANEL_PICTURE, 0, iBitmapID);

CanvasDrawBitmap(iPanelHandle,PANEL_CANVAS,iBitmapID,VAL_ENTIRE_OBJECT,VAL_ENTIRE_OBJECT);

DiscardBitmap (iBitmapID);

That are the things I did find in the documentation, and old projects. These are called by clicking on a button. And I think the image is loaded, as I get proper values using GetBitmapData for verification. But the PANEL_PICTURE and PANEL_CANVAS stay empty. No error or warning whatsoever.

I hope you can push me in the right direction to get it to draw the bitmaps.

EDIT: the bitmaps are in 24bit according to IrfanView (an image display tool), but GetBitmapData says it is of 32bit depth

Edit2: The bitmaps are around 12mb of size

[n_dakota]

Hi,

Were you able to resolve your problem?

[RobertoBozzolo]

Hi, I missed your post when you first published it.

While I can't imagine the reason for this misbehaviour from the code you posted, I would try some things to try understanding what's happening.

First of all, are SetCtrlBitmap and CanvasDrawBitmap returning any error?

Second, I would try calling DisplayImageFile instead of SetCtrlBitmap at least to see if the picture control actually shows the image.

Third, I would try with smaller images to understand whether you may have memory problems.

Regarding your second-to-last question, the image you load in memory always match the screen color depth, regardless the original format they have. This is clearly stated in the help for GetBitmapFromFile.