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# CheckmarkTypeEnum
CheckmarkTypeEnum enumeration constants describe checkmark types.
```
typedef enum {
CMT_Square,
CMT_Empty,
CMT_Custom,
CMT_Circle
} CheckmarkTypeEnum;
```
## Elements
| Name | Description |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| CMT\\\_Circle | Checkmarks in circles. For example, checkmarks of this type may look like this (in checked and not checked state): 
|
| CMT\\\_Custom | The checkmark has a non-standard form. For example, checkmarks of this type may look like this (in checked and not checked state): 
|
| CMT\\\_Empty | Checkmarks against an empty background. For example, checkmarks of this type may look like this (in checked and not checked state): 
|
| CMT\\\_Square | Checkmarks in squares. For example, checkmarks of this type may look like this (in checked and not checked state): 
|
## Used in
[ICheckmarkBlock::CheckmarkType](/fine-reader/engine/api-reference/layout-related-objects/checkmarkblock#checkmarktype)