Cannot select colors from "More colors" option

[Lasse Hummel]

Hello,

I have a question regarding an issue I have with the ColorPickerPalette control for WPF.

I have implemented a Window with such a control on it, and I can open the color selection dialog from the button. However, when I select "More Colors", it opens the "Colors" dialog (with the hexagon), but everything is frozen. I can't select any colors from that dialog, and I can't open the "Custom" tab either - none of the buttons work; in short, the only I can do with that dialog is to close it with the cross in the top right corner of the dialog, and return to the "Main" color selection dialog.

Can you help with this?

Thanks in advance.

Best regards,

L. Hummel

[Gokul Sainarayanan]

Hi Lasse,

We have checked your reported query with ColorPickerPalette but we were unable to reproduce the reported issue. We have captured the video of the same and the MoreColors window worked properly and we were able to select the color in the control. Please download the video from the following location.

Link: http://www.syncfusion.com/downloads/support/forum/138153/ze/COLORP~1-1088544617

Can you please let us know more information regarding the reported issue as it will help us to further analyze it.

Regards,
Gokul S

[L. Hummel]

Hello,

I'm not sure I understand your request; I've described the issue as detailed as I can. I have tried reading the documentation for the control, which is very limited. I wonder whether there are any specific requirements for the control - t.ex. that it must be within a specific type of container, that some settings need to be specified, etc. I couldn't find any information about that.

Best regards,

Lasse Hummel

[Gokul Sainarayanan]

Hi Lasse,

Sorry for the inconvenience caused.

We try to get more information from your to see the issue from our side. We have prepared a simple sample in which we haven’t set any additional properties for the ColorPickerPalette and this sample works fine at our end. So can you please provide below details to analyze further on this?

• Provide us Syncfusion version details which you are using
• Does the issue reproduces in a particular machine or in all the machines at your end?
• Share your machine configuration details such as OS, scaling, resolution, etc
• Also please check in below sample whether we doesn't add any properties to the control and let us know whether you facing same issue in this.

Sample Link: http://www.syncfusion.com/downloads/support/forum/138153/ze/ColorPickerPaletteSample1553889208  

We would check this issue further based on your information.

Regards,
Gokul S 

[L. Hummel]

Hello,

I'm using your version 16.1460.0.24. My system is a Windows 10 Enterprise based system with the latest updates. The system is on an HP Elitebook 8740w workstation with the following configuration:

Processor: Intel Core i7 8 core

Memory: 32 Gb Ram.

Harddisk: 1TB SSD

Screencard: NVidia Quadro FX 3800M

External Screen.

Resolution:

Builtin screen on notebook: 1920 x 1200

External screen: 2560 x 1440

My development environment is Visual Studio 2017 Enterprise - also with the latest updates.

I have tried to run your very simple example, and it works. Mine is a bit more complicated, and have a lot of nested containers (Stackpanels, Grids, DockPanels, etc.) Is there any limitation on how deeply nested your color picker control can be?

On the same level as the color picker palette control (within the same grid), is also used another of your controls - the FontListBox - it works fine without problems. The color picker also works, except when I go to the embedded dialog (the native WinForm dialog) for selecting custom colors. It is on that dialog that none of the buttons or color functions are working.

I hope this provides you with some useful information.

Best regards.

EDIT: It seems I have found the culprit; it turned out that an automatically generated default Grid background style in one of the resource dictionaries used by the application, in some way blocked the functionality of WinForms. When I removed those (3) lines, the problem disappeared.

Best regards,

L. Hummel

[Gokul Sainarayanan]

Hi Lasse,

We have checked your reported query with the ColorPickerPalette and there won’t be any issues in the control due to used in long hierarchy. As you have stated that the reported issue arises in your application and not in our sample application, can you please let me know whether you have set any additional properties to control ?

Query: It seems I have found the culprit; it turned out that an automatically generated default Grid background style in one of the resource dictionaries used by the application, in some way blocked the functionality of WinForms. When I removed those (3) lines, the problem disappeared.

In this query you have mentioned that by removing few lines in the style, the problem has been disappeared. Can you please let me know whether it has resolved the reported freeze issue with the ColorPickerPalette or any other issue?

Regards,
Gokul S