Delphi draw a closed rectangle with two rounded corners and to rectangular corners
user2383818
How can I draw a rectangle that has two round corners and the opposite corners are rectangular corners. The shape must be closed so it can be filled with the Brush color. The Polyline method doesn't draw curved lines. Can I add the points of an Arc to the polyline points? I tried to draw a RoundRect using Canvas method and then, overlapping a rectangle over the lower round corners, but I couldn't figure out how to erase the upper line of the rectangle when drawign just the border of the shape without filling it. Note: if you think is relevant, I can add the code I used.
Sample of the desired shape:
Sample of what I got with Delphi:
Remy Lebeau
You don't have to fill the shape at the same time you draw it. You can use a series of TCanvas.LineTo() and TCanvas.ArcTo()/TCanvas.AngleArc() calls first to create the shape, then call TCanvas.FloodFill() afterwards to fill it.
Otherwise, you can overlap TCanvas.Rectangle() on top of TCanvas.RoundRect() with the same fill color, and then use TCanvas.MoveTo()/TCanvas.LineTo() to draw over the dividing line with the same fill color.
Another option would be to forget using TCanvas drawing methods and just use Win32 API calls instead. Use CreateRoundRectRgn(), CreateRectRgn(), and CombineRn() to create a HRGN that has your desired shape, then use FillRgn() and FrameRgn() to draw on your TCanvas using that HRGN.
Collected from the Internet
Please contact [email protected] to delete if infringement.
edited at
- Prev: Detect long touch in Sprite Kit
- Next: boost-python unable to catch and translate c++ exception
Related
TOP Ranking
- 1
Can't pre-populate phone number and message body in SMS link on iPhones when SMS app is not running in the background
- 2
pump.io port in URL
- 3
Failed to listen on localhost:8000 (reason: Cannot assign requested address)
- 4
grouping by column variables and appending a new variable based on condition
- 5
Python Read Directory And Output to CSV
- 6
BigQuery - concatenate ignoring NULL
- 7
Angular 8. Unknown amount of http.get requests in array to call, must be sequential, what to use
- 8
Remove adjacent duplicates in linked list in C
- 9
Can a 32-bit antivirus program protect you from 64-bit threats
- 10
How to keep curl session alive between two php processes?
- 11
Limit number of characters in uitextview
- 12
Unable to use switch toggle for dark mode in material-ui
- 13
In C#, is there a way to create a List directly from an Array without copying?
- 14
Laravel getting value from another table using eloquent
- 15
Spring Boot JPA PostgreSQL Web App - Internal Authentication Error
- 16
MTKView Displaying Wide Gamut P3 Colorspace
- 17
Vector input in shiny R and then use it
- 18
Modify c# Windows Forms control library
- 19
SQL Server : are transaction locking table for other users?
- 20
When I click any button in my view page the form is submitted
- 21
Can you sort columns (horizontally) in Google Sheets?
Comments