Image crop with GDI+

[jpbro]

If you're using the code I provide to set the crop rect, there's no need to involve GDI+ at all. Stay with RC6/Cairo and use the CropSurface method to get a new surface at the required coords and save it to disk. Something like:

mo_SrfOrig.CropSurface(mt_SelRect.Left, _
                                    mt_SelRect.Top, _
                                    mt_SelRect.Right - mt_SelRect.Left, _
                                    mt_SelRect.Bottom - mt_SelRect.Top).WriteContentToJpgFile App.Path & "\cropped.jpg"

[k_zeon]

If you're using the code I provide to set the crop rect, there's no need to involve GDI+ at all. Stay with RC6/Cairo and use the CropSurface method to get a new surface at the required coords and save it to disk. Something like:

mo_SrfOrig.CropSurface(mt_SelRect.Left, _
                                    mt_SelRect.Top, _
                                    mt_SelRect.Right - mt_SelRect.Left, _
                                    mt_SelRect.Bottom - mt_SelRect.Top).WriteContentToJpgFile App.Path & "\cropped.jpg"

tks. I already have a working model using GDI+ to save and view images and works well.

What i am looking to do is have a list of images. then i can right click each one and the crop form appears. I select the portion i want from Left image. On right i have the cropped image from the original file
showing. if i am happy then click ok. the coordinates are then saved for processing.

Once i am ready, i can process all files and either resize the whole image if not cropped or if an image is cropped resize the cropped image.

but its always worth knowing another method.

are there other save as methods like WriteContentToJpgFile, can it save to PNG, Tif,Gif,BMP etc or is it just that one

Just tried .WriteContentToGifFile , .WriteContentToBmpFile , .WriteContentToTifFile but these dont work.

tks

[jpbro]

are there other save as methods like WriteContentToJpgFile, can it save to PNG, Tif,Gif,BMP etc or is it just that one

Just tried .WriteContentToGifFile , .WriteContentToBmpFile , .WriteContentToTifFile but these dont work.

If Intellisense isn't working in your IDE, I recommend trying to get that fixed - programming without it can be pretty painful (especially with a new library). With Intellisense working & enabled you will see the following .WriteContent* methods:

• WriteContentToJpgByteArray
• WriteContentToJpgFile
• WriteContentToPdfByteArray
• WriteContentToPdfFile
• WriteContentToPngByteArray
• WriteContentToPngFile
• WriteContentToSvgByteArray
• WriteContentToSvgFile

The only conspicuously missing common Windows image format is BMP, but there is also a Picture property that returns an StdPicture so you can use the built-in VB6 SavePicture method to save a BMP file from a Cairo surface. For all other formats, you would need to use a different library to process the raw data (possibly via BindToArray/BindToArrayLong methods)